2015

155 questions · NEET

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2015

155 questions · NEET

Biology74 questions Chemistry38 questions Physics43 questions

Locomotion and MovementBiology · 2 questions Plant Growth and DevelopmentBiology · 2 questions Breathing and Exchange of GasesBiology · 1 questions Body Fluids and Its CirculationBiology · 3 questions Excretory Products and Their EliminationBiology · 2 questions Respiration in PlantsBiology · 1 questions Neural Control and CoordinationBiology · 2 questions Chemical Coordination and IntegrationBiology · 1 questions Sexual Reproduction in Flowering PlantsBiology · 5 questions Human ReproductionBiology · 4 questions Morphology of Flowering PlantsBiology · 4 questions Biological ClassificationBiology · 2 questions Plant KingdomBiology · 4 questions Animal KingdomBiology · 4 questions BiomoleculesBiology · 1 questions Cell Cycle and Cell DivisionBiology · 2 questions Cell the Unit of LifeBiology · 6 questions Biodiversity and ConservationBiology · 2 questions Anatomy of Flowering PlantsBiology · 2 questions Structural Organisation in AnimalsBiology · 1 questions Principles of Inheritance and VariationBiology · 6 questions Reproductive HealthBiology · 2 questions Molecular Basis of InheritanceBiology · 2 questions Human Health and DiseasesBiology · 3 questions Microbes in Human WelfareBiology · 1 questions Biotechnology and Its ApplicationsBiology · 3 questions Organisms and PopulationsBiology · 1 questions EcosystemBiology · 5 questions Coordination CompoundsChemistry · 2 questions Some Basic Concepts of ChemistryChemistry · 1 questions ElectrochemistryChemistry · 1 questions Alcohol Phenols and EthersChemistry · 1 questions Aldehydes Ketones and Carboxylic AcidsChemistry · 2 questions Organic Compounds Containing NitrogenChemistry · 1 questions SolutionsChemistry · 3 questions Haloalkanes and HaloarenesChemistry · 1 questions Chemical KineticsChemistry · 2 questions P Block ElementsChemistry · 1 questions D and F Block ElementsChemistry · 3 questions Chemical Bonding and Molecular StructureChemistry · 5 questions Structure of AtomChemistry · 2 questions Periodic Table and PeriodicityChemistry · 1 questions Chemical EquilibriumChemistry · 2 questions Ionic EquilibrumChemistry · 1 questions Some Basic Concepts of Organic ChemistryChemistry · 7 questions HydrocarbonsChemistry · 2 questions Electromagnetic WavesPhysics · 1 questions OscillationsPhysics · 2 questions CapacitorPhysics · 1 questions ElectrostaticsPhysics · 1 questions Current ElectricityPhysics · 3 questions Moving Charges and MagnetismPhysics · 3 questions Alternating CurrentPhysics · 1 questions Wave OpticsPhysics · 2 questions Geometrical OpticsPhysics · 2 questions Dual Nature of Radiation and MatterPhysics · 2 questions Atoms and NucleiPhysics · 1 questions Semiconductor ElectronicsPhysics · 2 questions Rotational MotionPhysics · 3 questions Motion in A Straight LinePhysics · 1 questions Motion in A PlanePhysics · 1 questions Laws of MotionPhysics · 2 questions Work Energy and PowerPhysics · 3 questions Center of Mass and CollisionPhysics · 2 questions GravitationPhysics · 1 questions Properties of MatterPhysics · 4 questions Heat and ThermodynamicsPhysics · 4 questions Units and MeasurementPhysics · 1 questions

Q1.Glenoid cavity articulates
Biology · Locomotion and Movement · MCQ
Q2.What causes a green plant exposed to the light, on only one side, to bend towards the source of light as it grows?
Biology · Plant Growth and Development · MCQ
Q3.Typical growth curve in plants is
Biology · Plant Growth and Development · MCQ
Q4.When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?
Biology · Breathing and Exchange of Gases · MCQ
Q5.Erythropoiesis starts in
Biology · Body Fluids and Its Circulation · MCQ
Q6.Which one of the following is correct?
Biology · Body Fluids and Its Circulation · MCQ
Q7.Blood pressure in the mammalian aorta is maximum during
Biology · Body Fluids and Its Circulation · MCQ
Q8.Which of the following does not favour the formation of large quantities of dilute urine?
Biology · Excretory Products and Their Elimination · MCQ
Q9.Removal of proximal convoluated tubule from the nephron will result in
Biology · Excretory Products and Their Elimination · MCQ
Q10.Cytochromes are found in
Biology · Respiration in Plants · MCQ
Q11.Sliding filament theory can be best explained as
Biology · Locomotion and Movement · MCQ
Q12.Which of the following regions of the brain is incorrectly paired with its function?
Biology · Neural Control and Coordination · MCQ
Q13.A gymnast is able to balance his body upside down even in the total darkness because of
Biology · Neural Control and Coordination · MCQ
Q14.A chemical signal that has both endocrine and neural roles is
Biology · Chemical Coordination and Integration · MCQ
Q15.Which one of the following may require pollinators, but is genetically similar to autogamy?
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q16.Which of the following are the important floral rewards to the animal pollinators ?
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q17.Which one of the following statements is not true?
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q18.Transmission tissue is characteristic feature of
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q19.Capacitation refers to changes in the
Biology · Human Reproduction · MCQ
Q20.Perigynous flowers are found in
Biology · Morphology of Flowering Plants · MCQ
Q21.True nucleus is absent in
Biology · Biological Classification · MCQ
Q22.Which one of the following matches is correct?
Biology · Biological Classification · MCQ
Q23.Which one of the following statements is wrong?
Biology · Plant Kingdom · MCQ
Q24.In which of the following, gametophyte is not independent free living?
Biology · Plant Kingdom · MCQ
Q25.Read the following five statements (A to E) and select the option with all correct statements. A. Mosses and lichens are the first organisms to colonise a bare rock. B. Selaginella is a homosporous pteridophyte C. Coralloid roots in Cycas…
Biology · Plant Kingdom · MCQ
Q26.Male gametes are flagellated in
Biology · Plant Kingdom · MCQ
Q27.Which of the following endoparasites of humans does show viviparity?
Biology · Animal Kingdom · MCQ
Q28.Which of the following represents the correct combination without any exception?
Biology · Animal Kingdom · MCQ
Q29.Which of the following animals is not viviparous?
Biology · Animal Kingdom · MCQ
Q30.Which of the following characteristics is mainly responsible for diversification of insects on land?
Biology · Animal Kingdom · MCQ
Q31.Which of these is not an important component of initiation of parturition in humans?
Biology · Human Reproduction · MCQ
Q32.Leaves become modified into spines in
Biology · Morphology of Flowering Plants · MCQ
Q33.Keel is the characteristic feature of flower of
Biology · Morphology of Flowering Plants · MCQ
Q34.is the floral formula of Includes diagram
Biology · Morphology of Flowering Plants · MCQ
Q35.Which one of the following statements is incorrect?
Biology · Biomolecules · MCQ
Q36.A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has
Biology · Cell Cycle and Cell Division · MCQ
Q37.Select the correct option. Includes table
Biology · Cell Cycle and Cell Division · MCQ
Q38.The structures that are formed by stacking of organized flattened membranous sacs in the chloroplasts are
Biology · Cell the Unit of Life · MCQ
Q39.Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as:
Biology · Biodiversity and Conservation · MCQ
Q40.A major characteristic of the monocot root is the presence of :
Biology · Anatomy of Flowering Plants · MCQ
Q41.Vascular bundles in monocotyledons are considered closed because
Biology · Anatomy of Flowering Plants · MCQ
Q42.The terga, sterna and pleura of cockroach body are joined by :
Biology · Structural Organisation in Animals · MCQ
Q43.DNA is not present in :
Biology · Cell the Unit of Life · MCQ
Q44.Nuclear envelope is a derivative of :
Biology · Cell the Unit of Life · MCQ
Q45.In which of the following both pairs have correct combination ?
Biology · Biodiversity and Conservation · MCQ
Q46.The chromosomes in which centromere is situated close to one end are :
Biology · Cell the Unit of Life · MCQ
Q47.Which one of the following is not an inclusion body found in prokaryotes?
Biology · Cell the Unit of Life · MCQ
Q48.Select the correct matching in the following pairs :
Biology · Cell the Unit of Life · MCQ
Q49.The hilum is a scar on the
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q50.The movement of a gene from one linkage group to another is called
Biology · Principles of Inheritance and Variation · MCQ
Q51.Alleles are
Biology · Principles of Inheritance and Variation · MCQ
Q52.A man with blood group ‘A’ marries a woman with blood group ‘B’. What are all the possible blood groups of their offsprings?
Biology · Principles of Inheritance and Variation · MCQ
Q53.How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?
Biology · Principles of Inheritance and Variation · MCQ
Q54.Multiple alleles are present
Biology · Principles of Inheritance and Variation · MCQ
Q55.An abnormal human baby with ‘XXX’ sex chromosomes was born due to
Biology · Principles of Inheritance and Variation · MCQ
Q56.Which of the following cells during gametogenesis is normally diploid?
Biology · Human Reproduction · MCQ
Q57.Hysterectomy is surgical removal of
Biology · Human Reproduction · MCQ
Q58.Which of the following is not a sexually transmitted desease?
Biology · Reproductive Health · MCQ
Q59.Which of the following viruses is not transferred through semen of an infected male?
Biology · Reproductive Health · MCQ
Q60.Gene regulation governing lactose operon of E.coli that involves the lac I gene product is
Biology · Molecular Basis of Inheritance · MCQ
Q61.In sea urchin DNA, which is double stranded, 17% of the bases were shown to be cytosine, The percentages of the other three bases expected to be present in this DNA are
Biology · Molecular Basis of Inheritance · MCQ
Q62.Match each disease with its correct type of vaccine Includes table
Biology · Human Health and Diseases · MCQ
Q63.HIV that causes AIDS, first starts destroying
Biology · Human Health and Diseases · MCQ
Q64.The active form of Entamoeba histolytica feeds upon
Biology · Human Health and Diseases · MCQ
Q65.The guts of cow and buffalo possess
Biology · Microbes in Human Welfare · MCQ
Q66.In Bt cotton, the Bt toxin present in plant tissue as pro - toxin is converted into active toxin due to :
Biology · Biotechnology and Its Applications · MCQ
Q67.The crops engineered for glyphosate are resistant/ tolerant to :
Biology · Biotechnology and Its Applications · MCQ
Q68.Which body of the Government of India regulates GM research and safety of introducing GM organisms for public services ?
Biology · Biotechnology and Its Applications · MCQ
Q69.The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that: Includes diagram
Biology · Organisms and Populations · MCQ
Q70.Secondary Succession takes place on/in :
Biology · Ecosystem · MCQ
Q71.Vertical distribution of different species occupying different levels in a biotic community is known as :
Biology · Ecosystem · MCQ
Q72.The mass of living material at a trophic level at a particular time is called :
Biology · Ecosystem · MCQ
Q73.Most animals are tree dwellers in a:
Biology · Ecosystem · MCQ
Q74.In an ecosystem the rate of production of organic matter during photosynthesis is termed as :
Biology · Ecosystem · MCQ
Q75.Which of these statements about [Co(CN)6]3 $-$ is true?
Chemistry · Coordination Compounds · MCQ
Q76.A mixture of gases contains H2 and O2 gases in the ratio of 1 : 4 (w/w). What is the molar ratio of the two gases in the mixture ?
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q77.A device that converts energy of combustion of fuels like hydrogen and methane, directly into electrical energy is known as
Chemistry · Electrochemistry · MCQ
Q78.The reaction, is called Includes diagram
Chemistry · Alcohol Phenols and Ethers · MCQ
Q79.An organic compound 'X' having molecular formula C5H10O yields phenylhydrazone and gives negative response to the iodoform test and Tollens' test. It produces n-pentane on reduction. 'X' could be
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q80.The electrolytic reduction of nitrobenzene in strongly acidic medium produces
Chemistry · Organic Compounds Containing Nitrogen · MCQ
Q81.The boiling point of 0.2 mol kg $-$ 1 solution of X in water is greater than equimolal solution of Y in water. Which one of the following statements is true in this case?
Chemistry · Solutions · MCQ
Q82.Which of them is not equal to zero for an ideal solution?
Chemistry · Solutions · MCQ
Q83.Which one of the following electrolytes has the same value of van't Hoff factor (i) as that of Al2(SO4)3 (if all are 100% ionised)?
Chemistry · Solutions · MCQ
Q84.The reaction of C6H5CH $=$ CHCH3 with HBr produces
Chemistry · Haloalkanes and Haloarenes · MCQ
Q85.When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction is
Chemistry · Chemical Kinetics · MCQ
Q86.The activation energy of a reaction can be determined from the slope of which of the following graphs?
Chemistry · Chemical Kinetics · MCQ
Q87.Nitrogen dioxide and sulphur dioxide have some properties in common . Which property is shown by one of these compounds , but not by the other?
Chemistry · P Block Elements · MCQ
Q88.Magnetic moment 2.84 B.M. is given by (At. nos. Ni = 28, Ti = 22, Cr = 24, Co = 27)
Chemistry · D and F Block Elements · MCQ
Q89.Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii? (Numbers in the parenthesis are atomic numbers)
Chemistry · D and F Block Elements · MCQ
Q90.Which of the following processes does not involve oxidation of iron?
Chemistry · D and F Block Elements · MCQ
Q91.Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at 25oC?
Chemistry · Coordination Compounds · MCQ
Q92.Which of the following species contains equal number of $σ$ - and $π$ -bonds ?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q93.The number of d-electrons in Fe2+ (Z = 26) is not equal to the number of electrons in which one of the following ?
Chemistry · Structure of Atom · MCQ
Q94.The angular momentum of electron in 'd' orbital is equal to
Chemistry · Structure of Atom · MCQ
Q95.The species Ar, K+ and Ca2+ contain the same number of electrons. In which order do their radii increase ?
Chemistry · Periodic Table and Periodicity · MCQ
Q96.Which of the following options represents the correct bond order ?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q97.Maximum bond angle at nitrogen is present in which of the following ?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q98.The correct bond order in the following species is
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q99.Which of the following pairs of ions are isoelectronic and isostructural ?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q100.Which of the following statements is correct for a reversible process in a state of equilibrium?
Chemistry · Chemical Equilibrium · MCQ
Q101.The Ksp of Ag2CrO4, AgCl, AgBr and Agl are respectively, 1.1 $\times$ 10 $-$ 12, 1.8 $\times$ 10 $-$ 10, 5.0 $\times$ 10 $-$ 13, 8.3 $\times$ 10 $-$ 17. Which one of the following salts will precipitate last if AgNO3 solution is added to…
Chemistry · Ionic Equilibrum · MCQ
Q102.If the value of equilibrium constant for a particular reaction is 1.6 $\times$ 1012, then at equilibrium the system will contain
Chemistry · Chemical Equilibrium · MCQ
Q103.Treatment of cyclopentanone with methyl lithium gives which of the following species ? Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q104.The total number of $π$ -bond electrons in the following structure is Includes diagram
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q105.Given : Which of the given compounds can exhibit tautomerism? Includes diagram
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q106.Which of the following is the most correct electron displacement for a nucleophilic reaction to take place?
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q107.In Duma's method for estimation of nitrogen, 0.25 g of an organic compound gave 40 mL of nitrogen collected at 300 K temperature and 725 mm pressure. If the aqueous tension at 300 K is 25 mm, the percentage of nitrogen in the compound is
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q108.In which of the following compounds, the C $-$ Cl bond ionisation shall give most stable carbonium ion?
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q109.Consider the following compounds : Hyperconjunction occurs in Includes diagram
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q110.The enolic form of ethyl accetoacetate as shown below has Includes diagram
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q111.A single compound of the structure, is obtainable from ozonolysis of which of the following cyclic compounds? Includes diagram
Chemistry · Hydrocarbons · MCQ
Q112.Given : The enthalpy of hydrogenation of these compounds will be in the order as Includes diagram
Chemistry · Hydrocarbons · MCQ
Q113.A radiation of energy 'E' falls normally on a perfectly reflecting surface. The momentum transferred to the surface is (C = Velocity of light)
Physics · Electromagnetic Waves · MCQ
Q114.When two displacements represented by y1 = a sin $(ω t)$ and y2 = b cos $(ω t)$ aresuperimposed the motion is
Physics · Oscillations · MCQ
Q115.A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dieletric constant K, which can just fill the air gap of the capacitor, is now inserted in it . Which of…
Physics · Capacitor · MCQ
Q116.The electric field in a certain region is acting radially outward and is given by E = Ar. A charge contained in a sphere of radius 'a' centred at the origin of the field, will be given by
Physics · Electrostatics · MCQ
Q117.Across a metallic conductor of non-uniform cross section a constant potential difference is applied. The quantity which remains constant along the conductor is
Physics · Current Electricity · MCQ
Q118.A, B and C are voltmeters of resistance R, 1.5 R and 3R respectively as shown in the figure. When some potential difference is applied between X and Y, the voltmeter readings are VA, VB and VC respectively, Then Includes diagram
Physics · Current Electricity · MCQ
Q119.A potentiometer wire has length 4 m and resistance 8 $Ω$ . The resistance that must be connected in series with the wire and an accumulator of e.m.f. 2 V, so as to get a potential gradient 1 mV per cm on the wire is
Physics · Current Electricity · MCQ
Q120.An electron moving in a circular orbit of radius r makes n rotations per second. The magnetic field produced at the centre has magnitude
Physics · Moving Charges and Magnetism · MCQ
Q121.A conducting square frame of side 'a' and a long straight wire carrying current $I$ are located in the same plane as shown in the figure. The frame moves to the right with a constant velocity 'V'. The emf induced in the frame will be… Includes diagram
Physics · Moving Charges and Magnetism · MCQ
Q122.A wire carrying current $I$ has the shape shown in adjoining figure. Linear parts of the wire are very long and parallel to X-axis while semicircular protion of radius R is lying in Y-Z plane. Magtnetic field at pont $O$ is Includes diagram
Physics · Moving Charges and Magnetism · MCQ
Q123.A resistance 'R' draws power 'P' when connected to an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes 'Z'. the power drawn will be
Physics · Alternating Current · MCQ
Q124.A particle is executing SHM along a straight line. Its velocities at distances x1 and x2 from the mean position are V1 and V2 respectively. Its time period is
Physics · Oscillations · MCQ
Q125.For a parallel beam of monochromatic light of wavelength ' $λ$ ' , diffraction is produced by a single slit whose width 'a' is of the order of the wavelength of the light. If 'D' is the distance of the screen from the slit, the wifth…
Physics · Wave Optics · MCQ
Q126.The refracting angle of a prism is A, and refractive index of the material of the prism is cot (A/2). The angle of minimum deviation is
Physics · Geometrical Optics · MCQ
Q127.In a double slit experiment, the two slits are 1 mm apart and the screen is placed 1 m away. A monochromatic light of wavelength 500 nm is used. What will be the width of each slit for obtaining ten maxima of double slit within the central…
Physics · Wave Optics · MCQ
Q128.Two identical thin plano-convex glass lenses (refractive index 1.5) each having radius of curvature of 20 cm are placed with their convex surfaces in contact at the centre. The intervening space is filled with oil of refractive index 1.7.…
Physics · Geometrical Optics · MCQ
Q129.A certain metallic surface is illuminated with monochromatic light of wavelength, $λ .$ The stopping potential for photo-electric current for this light is 3V0. If the same surface is illuminated with light of wavelength 2 $\lambda…
Physics · Dual Nature of Radiation and Matter · MCQ
Q130.Which of the following figures represent the variation of particle momentum and the associated de-Broglie wavelength?
Physics · Dual Nature of Radiation and Matter · MCQ
Q131.Consider 3rd orbit of He+ (Helium), using non-relativistic approach, the speed of electron in this orbit will be [given K = 9 $\times$ 109 constant, Z = 2 and h (Planck's Constant) = 6.6 $\times$ 10 $-$ 34 J s]
Physics · Atoms and Nuclei · MCQ
Q132.Which logic gate is represented by the following combination of logic gates ? Includes diagram
Physics · Semiconductor Electronics · MCQ
Q133.If in a p-n junction, a square input signal of 10 V is applied, as shown, then the output across RL will be Includes diagram
Physics · Semiconductor Electronics · MCQ
Q134.Three identical spherical shells, each of mass m and radius r are placed as shown in figure. Consider an axis XX' which is touching to two shells and passing through diameter of third shell. Moment of inertia of the system consisting of… Includes diagram
Physics · Rotational Motion · MCQ
Q135.A particle of unit mass undergoes one-dimensional motion such that its velocity varies according to $v (x) = β x^{- 2 n}$ , where $β$ and n are constants and x is the position of the particle. The acceleration of…
Physics · Motion in A Straight Line · MCQ
Q136.A ship A is moving Westwards with a speed of 10 km h $-$ 1 and a ship B 100 km South of A, is moving Northwards with a speed of 10 km h $-$ 1. The time after which the distance between them becomes shortest, is
Physics · Motion in A Plane · MCQ
Q137.A block A of mass m1 rests on a horizontal table. A light string connected to it passes over a frictionless pully at the edge of table and from its other end another block B of mass m2 is suspended. The coefficient of kinetic friction…
Physics · Laws of Motion · MCQ
Q138.Three blocks A, B and C, of masses 4 kg, 2 kg and 1 kg respectively, are in contact on a frictionless surface, as shown. If a force of 14 N is applied on the 4 kg block, then the contact force between A and B is Includes diagram
Physics · Laws of Motion · MCQ
Q139.A block of mass 10 kg, moving in x direction with a constant speed of 10 m s $-$ 1, is subjected to a retarding force F = 0.1x J/m during its travel from x = 20 m to 30 m. Its final KE will be
Physics · Work Energy and Power · MCQ
Q140.A particle of mass m is driven by a machine that delivers a constant power k watts. If the particle starts from rest the force on the particle at time t is
Physics · Work Energy and Power · MCQ
Q141.Two particles of masses m1, m2 move with initial velocities u1 and u2. On collision, one of the particles get excited to higher level, after absorbing energy $ε$ . If final velocities of particles be v1 and v2 then we must have :
Physics · Center of Mass and Collision · MCQ
Q142.Two similar springs P and Q have spring constants KP and KQ, such that KP > KQ. They are stretched first by the same amount (case a), then by the same force (case b). The work done by the springs WP and WQ are related as, in case (a)…
Physics · Work Energy and Power · MCQ
Q143.A rod of weight W is supported by two parallel knife edges A and B and is in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of mass of the rod is at distance x from A. The normal reaction…
Physics · Rotational Motion · MCQ
Q144.A mass m moves in a circle on a smooth horizontal plane with velocity v0 at a radius R0. The mass is attached to a string which passes through a smooth hole in the plane as shown. the tension in the string is increased gradually and… Includes diagram
Physics · Rotational Motion · MCQ
Q145.Kepler's third law states that square of period of revoluation (T) of a planet around the sun, is proportional to third power of average distance r between sun and planet i.e. T2 = Kr3 here K is constant. If the masses of sun and planet…
Physics · Gravitation · MCQ
Q146.Two spherical bodies of mass M and 5M and radii R and 2R are released in free space with initial separation between their centres equal to 12R. If they attract each other due to gravitational force only, then the distance covered by the…
Physics · Center of Mass and Collision · MCQ
Q147.The two ends of a metal rod are maintained at temperatures 100oC and 110oC. The rate of heat flow in the rod is found to be 4.0 J/s. If the ends are maintained at temperatures 200oC and 210oC, the rate of heat flow will be
Physics · Properties of Matter · MCQ
Q148.A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m2. Assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force…
Physics · Properties of Matter · MCQ
Q149.On observing light from three different starts P, Q and R, it was found that intensity of violet colour is maximum in the spectrum of P, the intensity of green colour is maximum in the spectrum of R and the intensity of red colour is…
Physics · Properties of Matter · MCQ
Q150.The approximate depth of an ocean is 2700 m. The compressiblity of water is 45.4 $\times$ 10 $-$ 11 Pa $-$ 1 and density of water is 103 kg/m3. What fractional compression of water will be obtained at the bottom of the ocean?
Physics · Properties of Matter · MCQ
Q151.A Carnot engine, having an efficiency of as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is
Physics · Heat and Thermodynamics · MCQ
Q152.The ratio of the specific heats $\frac{C _{p}}{C _{v}} = γ$ in terms of degrees of freedom (n) is given by
Physics · Heat and Thermodynamics · MCQ
Q153.Figure below shows two paths that may be taken by a gas to go from a state A to a state C. In process AB, 400 J of heat is added to the system and in process BC, 100 J of heat is added to the system. The heat absorbed by the system in the… Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q154.One mole of an ideal diatomic gas undergoes a transition from A to B along a path AB as shown in the figure. The change in internal energy of the gas during the transition is Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q155.If energy (E), velocity (V) and time (T) are chosen as the fundamental quantities, the dimensional formula of surface tension will be
Physics · Units and Measurement · MCQ

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2015

155 questions · NEET

Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.

PYQ Library
NEET
Papers
2015

2015

155 questions · NEET

Biology74 questions Chemistry38 questions Physics43 questions

Locomotion and MovementBiology · 2 questions Plant Growth and DevelopmentBiology · 2 questions Breathing and Exchange of GasesBiology · 1 questions Body Fluids and Its CirculationBiology · 3 questions Excretory Products and Their EliminationBiology · 2 questions Respiration in PlantsBiology · 1 questions Neural Control and CoordinationBiology · 2 questions Chemical Coordination and IntegrationBiology · 1 questions Sexual Reproduction in Flowering PlantsBiology · 5 questions Human ReproductionBiology · 4 questions Morphology of Flowering PlantsBiology · 4 questions Biological ClassificationBiology · 2 questions Plant KingdomBiology · 4 questions Animal KingdomBiology · 4 questions BiomoleculesBiology · 1 questions Cell Cycle and Cell DivisionBiology · 2 questions Cell the Unit of LifeBiology · 6 questions Biodiversity and ConservationBiology · 2 questions Anatomy of Flowering PlantsBiology · 2 questions Structural Organisation in AnimalsBiology · 1 questions Principles of Inheritance and VariationBiology · 6 questions Reproductive HealthBiology · 2 questions Molecular Basis of InheritanceBiology · 2 questions Human Health and DiseasesBiology · 3 questions Microbes in Human WelfareBiology · 1 questions Biotechnology and Its ApplicationsBiology · 3 questions Organisms and PopulationsBiology · 1 questions EcosystemBiology · 5 questions Coordination CompoundsChemistry · 2 questions Some Basic Concepts of ChemistryChemistry · 1 questions ElectrochemistryChemistry · 1 questions Alcohol Phenols and EthersChemistry · 1 questions Aldehydes Ketones and Carboxylic AcidsChemistry · 2 questions Organic Compounds Containing NitrogenChemistry · 1 questions SolutionsChemistry · 3 questions Haloalkanes and HaloarenesChemistry · 1 questions Chemical KineticsChemistry · 2 questions P Block ElementsChemistry · 1 questions D and F Block ElementsChemistry · 3 questions Chemical Bonding and Molecular StructureChemistry · 5 questions Structure of AtomChemistry · 2 questions Periodic Table and PeriodicityChemistry · 1 questions Chemical EquilibriumChemistry · 2 questions Ionic EquilibrumChemistry · 1 questions Some Basic Concepts of Organic ChemistryChemistry · 7 questions HydrocarbonsChemistry · 2 questions Electromagnetic WavesPhysics · 1 questions OscillationsPhysics · 2 questions CapacitorPhysics · 1 questions ElectrostaticsPhysics · 1 questions Current ElectricityPhysics · 3 questions Moving Charges and MagnetismPhysics · 3 questions Alternating CurrentPhysics · 1 questions Wave OpticsPhysics · 2 questions Geometrical OpticsPhysics · 2 questions Dual Nature of Radiation and MatterPhysics · 2 questions Atoms and NucleiPhysics · 1 questions Semiconductor ElectronicsPhysics · 2 questions Rotational MotionPhysics · 3 questions Motion in A Straight LinePhysics · 1 questions Motion in A PlanePhysics · 1 questions Laws of MotionPhysics · 2 questions Work Energy and PowerPhysics · 3 questions Center of Mass and CollisionPhysics · 2 questions GravitationPhysics · 1 questions Properties of MatterPhysics · 4 questions Heat and ThermodynamicsPhysics · 4 questions Units and MeasurementPhysics · 1 questions

Q1.Glenoid cavity articulates
Biology · Locomotion and Movement · MCQ
Q2.What causes a green plant exposed to the light, on only one side, to bend towards the source of light as it grows?
Biology · Plant Growth and Development · MCQ
Q3.Typical growth curve in plants is
Biology · Plant Growth and Development · MCQ
Q4.When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?
Biology · Breathing and Exchange of Gases · MCQ
Q5.Erythropoiesis starts in
Biology · Body Fluids and Its Circulation · MCQ
Q6.Which one of the following is correct?
Biology · Body Fluids and Its Circulation · MCQ
Q7.Blood pressure in the mammalian aorta is maximum during
Biology · Body Fluids and Its Circulation · MCQ
Q8.Which of the following does not favour the formation of large quantities of dilute urine?
Biology · Excretory Products and Their Elimination · MCQ
Q9.Removal of proximal convoluated tubule from the nephron will result in
Biology · Excretory Products and Their Elimination · MCQ
Q10.Cytochromes are found in
Biology · Respiration in Plants · MCQ
Q11.Sliding filament theory can be best explained as
Biology · Locomotion and Movement · MCQ
Q12.Which of the following regions of the brain is incorrectly paired with its function?
Biology · Neural Control and Coordination · MCQ
Q13.A gymnast is able to balance his body upside down even in the total darkness because of
Biology · Neural Control and Coordination · MCQ
Q14.A chemical signal that has both endocrine and neural roles is
Biology · Chemical Coordination and Integration · MCQ
Q15.Which one of the following may require pollinators, but is genetically similar to autogamy?
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q16.Which of the following are the important floral rewards to the animal pollinators ?
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q17.Which one of the following statements is not true?
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q18.Transmission tissue is characteristic feature of
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q19.Capacitation refers to changes in the
Biology · Human Reproduction · MCQ
Q20.Perigynous flowers are found in
Biology · Morphology of Flowering Plants · MCQ
Q21.True nucleus is absent in
Biology · Biological Classification · MCQ
Q22.Which one of the following matches is correct?
Biology · Biological Classification · MCQ
Q23.Which one of the following statements is wrong?
Biology · Plant Kingdom · MCQ
Q24.In which of the following, gametophyte is not independent free living?
Biology · Plant Kingdom · MCQ
Q25.Read the following five statements (A to E) and select the option with all correct statements. A. Mosses and lichens are the first organisms to colonise a bare rock. B. Selaginella is a homosporous pteridophyte C. Coralloid roots in Cycas…
Biology · Plant Kingdom · MCQ
Q26.Male gametes are flagellated in
Biology · Plant Kingdom · MCQ
Q27.Which of the following endoparasites of humans does show viviparity?
Biology · Animal Kingdom · MCQ
Q28.Which of the following represents the correct combination without any exception?
Biology · Animal Kingdom · MCQ
Q29.Which of the following animals is not viviparous?
Biology · Animal Kingdom · MCQ
Q30.Which of the following characteristics is mainly responsible for diversification of insects on land?
Biology · Animal Kingdom · MCQ
Q31.Which of these is not an important component of initiation of parturition in humans?
Biology · Human Reproduction · MCQ
Q32.Leaves become modified into spines in
Biology · Morphology of Flowering Plants · MCQ
Q33.Keel is the characteristic feature of flower of
Biology · Morphology of Flowering Plants · MCQ
Q34.is the floral formula of Includes diagram
Biology · Morphology of Flowering Plants · MCQ
Q35.Which one of the following statements is incorrect?
Biology · Biomolecules · MCQ
Q36.A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has
Biology · Cell Cycle and Cell Division · MCQ
Q37.Select the correct option. Includes table
Biology · Cell Cycle and Cell Division · MCQ
Q38.The structures that are formed by stacking of organized flattened membranous sacs in the chloroplasts are
Biology · Cell the Unit of Life · MCQ
Q39.Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as:
Biology · Biodiversity and Conservation · MCQ
Q40.A major characteristic of the monocot root is the presence of :
Biology · Anatomy of Flowering Plants · MCQ
Q41.Vascular bundles in monocotyledons are considered closed because
Biology · Anatomy of Flowering Plants · MCQ
Q42.The terga, sterna and pleura of cockroach body are joined by :
Biology · Structural Organisation in Animals · MCQ
Q43.DNA is not present in :
Biology · Cell the Unit of Life · MCQ
Q44.Nuclear envelope is a derivative of :
Biology · Cell the Unit of Life · MCQ
Q45.In which of the following both pairs have correct combination ?
Biology · Biodiversity and Conservation · MCQ
Q46.The chromosomes in which centromere is situated close to one end are :
Biology · Cell the Unit of Life · MCQ
Q47.Which one of the following is not an inclusion body found in prokaryotes?
Biology · Cell the Unit of Life · MCQ
Q48.Select the correct matching in the following pairs :
Biology · Cell the Unit of Life · MCQ
Q49.The hilum is a scar on the
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q50.The movement of a gene from one linkage group to another is called
Biology · Principles of Inheritance and Variation · MCQ
Q51.Alleles are
Biology · Principles of Inheritance and Variation · MCQ
Q52.A man with blood group ‘A’ marries a woman with blood group ‘B’. What are all the possible blood groups of their offsprings?
Biology · Principles of Inheritance and Variation · MCQ
Q53.How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?
Biology · Principles of Inheritance and Variation · MCQ
Q54.Multiple alleles are present
Biology · Principles of Inheritance and Variation · MCQ
Q55.An abnormal human baby with ‘XXX’ sex chromosomes was born due to
Biology · Principles of Inheritance and Variation · MCQ
Q56.Which of the following cells during gametogenesis is normally diploid?
Biology · Human Reproduction · MCQ
Q57.Hysterectomy is surgical removal of
Biology · Human Reproduction · MCQ
Q58.Which of the following is not a sexually transmitted desease?
Biology · Reproductive Health · MCQ
Q59.Which of the following viruses is not transferred through semen of an infected male?
Biology · Reproductive Health · MCQ
Q60.Gene regulation governing lactose operon of E.coli that involves the lac I gene product is
Biology · Molecular Basis of Inheritance · MCQ
Q61.In sea urchin DNA, which is double stranded, 17% of the bases were shown to be cytosine, The percentages of the other three bases expected to be present in this DNA are
Biology · Molecular Basis of Inheritance · MCQ
Q62.Match each disease with its correct type of vaccine Includes table
Biology · Human Health and Diseases · MCQ
Q63.HIV that causes AIDS, first starts destroying
Biology · Human Health and Diseases · MCQ
Q64.The active form of Entamoeba histolytica feeds upon
Biology · Human Health and Diseases · MCQ
Q65.The guts of cow and buffalo possess
Biology · Microbes in Human Welfare · MCQ
Q66.In Bt cotton, the Bt toxin present in plant tissue as pro - toxin is converted into active toxin due to :
Biology · Biotechnology and Its Applications · MCQ
Q67.The crops engineered for glyphosate are resistant/ tolerant to :
Biology · Biotechnology and Its Applications · MCQ
Q68.Which body of the Government of India regulates GM research and safety of introducing GM organisms for public services ?
Biology · Biotechnology and Its Applications · MCQ
Q69.The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that: Includes diagram
Biology · Organisms and Populations · MCQ
Q70.Secondary Succession takes place on/in :
Biology · Ecosystem · MCQ
Q71.Vertical distribution of different species occupying different levels in a biotic community is known as :
Biology · Ecosystem · MCQ
Q72.The mass of living material at a trophic level at a particular time is called :
Biology · Ecosystem · MCQ
Q73.Most animals are tree dwellers in a:
Biology · Ecosystem · MCQ
Q74.In an ecosystem the rate of production of organic matter during photosynthesis is termed as :
Biology · Ecosystem · MCQ
Q75.Which of these statements about [Co(CN)6]3 $-$ is true?
Chemistry · Coordination Compounds · MCQ
Q76.A mixture of gases contains H2 and O2 gases in the ratio of 1 : 4 (w/w). What is the molar ratio of the two gases in the mixture ?
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q77.A device that converts energy of combustion of fuels like hydrogen and methane, directly into electrical energy is known as
Chemistry · Electrochemistry · MCQ
Q78.The reaction, is called Includes diagram
Chemistry · Alcohol Phenols and Ethers · MCQ
Q79.An organic compound 'X' having molecular formula C5H10O yields phenylhydrazone and gives negative response to the iodoform test and Tollens' test. It produces n-pentane on reduction. 'X' could be
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q80.The electrolytic reduction of nitrobenzene in strongly acidic medium produces
Chemistry · Organic Compounds Containing Nitrogen · MCQ
Q81.The boiling point of 0.2 mol kg $-$ 1 solution of X in water is greater than equimolal solution of Y in water. Which one of the following statements is true in this case?
Chemistry · Solutions · MCQ
Q82.Which of them is not equal to zero for an ideal solution?
Chemistry · Solutions · MCQ
Q83.Which one of the following electrolytes has the same value of van't Hoff factor (i) as that of Al2(SO4)3 (if all are 100% ionised)?
Chemistry · Solutions · MCQ
Q84.The reaction of C6H5CH $=$ CHCH3 with HBr produces
Chemistry · Haloalkanes and Haloarenes · MCQ
Q85.When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction is
Chemistry · Chemical Kinetics · MCQ
Q86.The activation energy of a reaction can be determined from the slope of which of the following graphs?
Chemistry · Chemical Kinetics · MCQ
Q87.Nitrogen dioxide and sulphur dioxide have some properties in common . Which property is shown by one of these compounds , but not by the other?
Chemistry · P Block Elements · MCQ
Q88.Magnetic moment 2.84 B.M. is given by (At. nos. Ni = 28, Ti = 22, Cr = 24, Co = 27)
Chemistry · D and F Block Elements · MCQ
Q89.Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii? (Numbers in the parenthesis are atomic numbers)
Chemistry · D and F Block Elements · MCQ
Q90.Which of the following processes does not involve oxidation of iron?
Chemistry · D and F Block Elements · MCQ
Q91.Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at 25oC?
Chemistry · Coordination Compounds · MCQ
Q92.Which of the following species contains equal number of $σ$ - and $π$ -bonds ?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q93.The number of d-electrons in Fe2+ (Z = 26) is not equal to the number of electrons in which one of the following ?
Chemistry · Structure of Atom · MCQ
Q94.The angular momentum of electron in 'd' orbital is equal to
Chemistry · Structure of Atom · MCQ
Q95.The species Ar, K+ and Ca2+ contain the same number of electrons. In which order do their radii increase ?
Chemistry · Periodic Table and Periodicity · MCQ
Q96.Which of the following options represents the correct bond order ?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q97.Maximum bond angle at nitrogen is present in which of the following ?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q98.The correct bond order in the following species is
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q99.Which of the following pairs of ions are isoelectronic and isostructural ?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q100.Which of the following statements is correct for a reversible process in a state of equilibrium?
Chemistry · Chemical Equilibrium · MCQ
Q101.The Ksp of Ag2CrO4, AgCl, AgBr and Agl are respectively, 1.1 $\times$ 10 $-$ 12, 1.8 $\times$ 10 $-$ 10, 5.0 $\times$ 10 $-$ 13, 8.3 $\times$ 10 $-$ 17. Which one of the following salts will precipitate last if AgNO3 solution is added to…
Chemistry · Ionic Equilibrum · MCQ
Q102.If the value of equilibrium constant for a particular reaction is 1.6 $\times$ 1012, then at equilibrium the system will contain
Chemistry · Chemical Equilibrium · MCQ
Q103.Treatment of cyclopentanone with methyl lithium gives which of the following species ? Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q104.The total number of $π$ -bond electrons in the following structure is Includes diagram
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q105.Given : Which of the given compounds can exhibit tautomerism? Includes diagram
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q106.Which of the following is the most correct electron displacement for a nucleophilic reaction to take place?
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q107.In Duma's method for estimation of nitrogen, 0.25 g of an organic compound gave 40 mL of nitrogen collected at 300 K temperature and 725 mm pressure. If the aqueous tension at 300 K is 25 mm, the percentage of nitrogen in the compound is
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q108.In which of the following compounds, the C $-$ Cl bond ionisation shall give most stable carbonium ion?
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q109.Consider the following compounds : Hyperconjunction occurs in Includes diagram
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q110.The enolic form of ethyl accetoacetate as shown below has Includes diagram
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q111.A single compound of the structure, is obtainable from ozonolysis of which of the following cyclic compounds? Includes diagram
Chemistry · Hydrocarbons · MCQ
Q112.Given : The enthalpy of hydrogenation of these compounds will be in the order as Includes diagram
Chemistry · Hydrocarbons · MCQ
Q113.A radiation of energy 'E' falls normally on a perfectly reflecting surface. The momentum transferred to the surface is (C = Velocity of light)
Physics · Electromagnetic Waves · MCQ
Q114.When two displacements represented by y1 = a sin $(ω t)$ and y2 = b cos $(ω t)$ aresuperimposed the motion is
Physics · Oscillations · MCQ
Q115.A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dieletric constant K, which can just fill the air gap of the capacitor, is now inserted in it . Which of…
Physics · Capacitor · MCQ
Q116.The electric field in a certain region is acting radially outward and is given by E = Ar. A charge contained in a sphere of radius 'a' centred at the origin of the field, will be given by
Physics · Electrostatics · MCQ
Q117.Across a metallic conductor of non-uniform cross section a constant potential difference is applied. The quantity which remains constant along the conductor is
Physics · Current Electricity · MCQ
Q118.A, B and C are voltmeters of resistance R, 1.5 R and 3R respectively as shown in the figure. When some potential difference is applied between X and Y, the voltmeter readings are VA, VB and VC respectively, Then Includes diagram
Physics · Current Electricity · MCQ
Q119.A potentiometer wire has length 4 m and resistance 8 $Ω$ . The resistance that must be connected in series with the wire and an accumulator of e.m.f. 2 V, so as to get a potential gradient 1 mV per cm on the wire is
Physics · Current Electricity · MCQ
Q120.An electron moving in a circular orbit of radius r makes n rotations per second. The magnetic field produced at the centre has magnitude
Physics · Moving Charges and Magnetism · MCQ
Q121.A conducting square frame of side 'a' and a long straight wire carrying current $I$ are located in the same plane as shown in the figure. The frame moves to the right with a constant velocity 'V'. The emf induced in the frame will be… Includes diagram
Physics · Moving Charges and Magnetism · MCQ
Q122.A wire carrying current $I$ has the shape shown in adjoining figure. Linear parts of the wire are very long and parallel to X-axis while semicircular protion of radius R is lying in Y-Z plane. Magtnetic field at pont $O$ is Includes diagram
Physics · Moving Charges and Magnetism · MCQ
Q123.A resistance 'R' draws power 'P' when connected to an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes 'Z'. the power drawn will be
Physics · Alternating Current · MCQ
Q124.A particle is executing SHM along a straight line. Its velocities at distances x1 and x2 from the mean position are V1 and V2 respectively. Its time period is
Physics · Oscillations · MCQ
Q125.For a parallel beam of monochromatic light of wavelength ' $λ$ ' , diffraction is produced by a single slit whose width 'a' is of the order of the wavelength of the light. If 'D' is the distance of the screen from the slit, the wifth…
Physics · Wave Optics · MCQ
Q126.The refracting angle of a prism is A, and refractive index of the material of the prism is cot (A/2). The angle of minimum deviation is
Physics · Geometrical Optics · MCQ
Q127.In a double slit experiment, the two slits are 1 mm apart and the screen is placed 1 m away. A monochromatic light of wavelength 500 nm is used. What will be the width of each slit for obtaining ten maxima of double slit within the central…
Physics · Wave Optics · MCQ
Q128.Two identical thin plano-convex glass lenses (refractive index 1.5) each having radius of curvature of 20 cm are placed with their convex surfaces in contact at the centre. The intervening space is filled with oil of refractive index 1.7.…
Physics · Geometrical Optics · MCQ
Q129.A certain metallic surface is illuminated with monochromatic light of wavelength, $λ .$ The stopping potential for photo-electric current for this light is 3V0. If the same surface is illuminated with light of wavelength 2 $\lambda…
Physics · Dual Nature of Radiation and Matter · MCQ
Q130.Which of the following figures represent the variation of particle momentum and the associated de-Broglie wavelength?
Physics · Dual Nature of Radiation and Matter · MCQ
Q131.Consider 3rd orbit of He+ (Helium), using non-relativistic approach, the speed of electron in this orbit will be [given K = 9 $\times$ 109 constant, Z = 2 and h (Planck's Constant) = 6.6 $\times$ 10 $-$ 34 J s]
Physics · Atoms and Nuclei · MCQ
Q132.Which logic gate is represented by the following combination of logic gates ? Includes diagram
Physics · Semiconductor Electronics · MCQ
Q133.If in a p-n junction, a square input signal of 10 V is applied, as shown, then the output across RL will be Includes diagram
Physics · Semiconductor Electronics · MCQ
Q134.Three identical spherical shells, each of mass m and radius r are placed as shown in figure. Consider an axis XX' which is touching to two shells and passing through diameter of third shell. Moment of inertia of the system consisting of… Includes diagram
Physics · Rotational Motion · MCQ
Q135.A particle of unit mass undergoes one-dimensional motion such that its velocity varies according to $v (x) = β x^{- 2 n}$ , where $β$ and n are constants and x is the position of the particle. The acceleration of…
Physics · Motion in A Straight Line · MCQ
Q136.A ship A is moving Westwards with a speed of 10 km h $-$ 1 and a ship B 100 km South of A, is moving Northwards with a speed of 10 km h $-$ 1. The time after which the distance between them becomes shortest, is
Physics · Motion in A Plane · MCQ
Q137.A block A of mass m1 rests on a horizontal table. A light string connected to it passes over a frictionless pully at the edge of table and from its other end another block B of mass m2 is suspended. The coefficient of kinetic friction…
Physics · Laws of Motion · MCQ
Q138.Three blocks A, B and C, of masses 4 kg, 2 kg and 1 kg respectively, are in contact on a frictionless surface, as shown. If a force of 14 N is applied on the 4 kg block, then the contact force between A and B is Includes diagram
Physics · Laws of Motion · MCQ
Q139.A block of mass 10 kg, moving in x direction with a constant speed of 10 m s $-$ 1, is subjected to a retarding force F = 0.1x J/m during its travel from x = 20 m to 30 m. Its final KE will be
Physics · Work Energy and Power · MCQ
Q140.A particle of mass m is driven by a machine that delivers a constant power k watts. If the particle starts from rest the force on the particle at time t is
Physics · Work Energy and Power · MCQ
Q141.Two particles of masses m1, m2 move with initial velocities u1 and u2. On collision, one of the particles get excited to higher level, after absorbing energy $ε$ . If final velocities of particles be v1 and v2 then we must have :
Physics · Center of Mass and Collision · MCQ
Q142.Two similar springs P and Q have spring constants KP and KQ, such that KP > KQ. They are stretched first by the same amount (case a), then by the same force (case b). The work done by the springs WP and WQ are related as, in case (a)…
Physics · Work Energy and Power · MCQ
Q143.A rod of weight W is supported by two parallel knife edges A and B and is in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of mass of the rod is at distance x from A. The normal reaction…
Physics · Rotational Motion · MCQ
Q144.A mass m moves in a circle on a smooth horizontal plane with velocity v0 at a radius R0. The mass is attached to a string which passes through a smooth hole in the plane as shown. the tension in the string is increased gradually and… Includes diagram
Physics · Rotational Motion · MCQ
Q145.Kepler's third law states that square of period of revoluation (T) of a planet around the sun, is proportional to third power of average distance r between sun and planet i.e. T2 = Kr3 here K is constant. If the masses of sun and planet…
Physics · Gravitation · MCQ
Q146.Two spherical bodies of mass M and 5M and radii R and 2R are released in free space with initial separation between their centres equal to 12R. If they attract each other due to gravitational force only, then the distance covered by the…
Physics · Center of Mass and Collision · MCQ
Q147.The two ends of a metal rod are maintained at temperatures 100oC and 110oC. The rate of heat flow in the rod is found to be 4.0 J/s. If the ends are maintained at temperatures 200oC and 210oC, the rate of heat flow will be
Physics · Properties of Matter · MCQ
Q148.A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m2. Assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force…
Physics · Properties of Matter · MCQ
Q149.On observing light from three different starts P, Q and R, it was found that intensity of violet colour is maximum in the spectrum of P, the intensity of green colour is maximum in the spectrum of R and the intensity of red colour is…
Physics · Properties of Matter · MCQ
Q150.The approximate depth of an ocean is 2700 m. The compressiblity of water is 45.4 $\times$ 10 $-$ 11 Pa $-$ 1 and density of water is 103 kg/m3. What fractional compression of water will be obtained at the bottom of the ocean?
Physics · Properties of Matter · MCQ
Q151.A Carnot engine, having an efficiency of as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is
Physics · Heat and Thermodynamics · MCQ
Q152.The ratio of the specific heats $\frac{C _{p}}{C _{v}} = γ$ in terms of degrees of freedom (n) is given by
Physics · Heat and Thermodynamics · MCQ
Q153.Figure below shows two paths that may be taken by a gas to go from a state A to a state C. In process AB, 400 J of heat is added to the system and in process BC, 100 J of heat is added to the system. The heat absorbed by the system in the… Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q154.One mole of an ideal diatomic gas undergoes a transition from A to B along a path AB as shown in the figure. The change in internal energy of the gas during the transition is Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q155.If energy (E), velocity (V) and time (T) are chosen as the fundamental quantities, the dimensional formula of surface tension will be
Physics · Units and Measurement · MCQ