2024

200 questions · NEET

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2024

200 questions · NEET

Biology100 questions Chemistry50 questions Physics50 questions

Q1.The regions with high level of species richness, high degree of endemism and a loss of $70%$ of the species and habitat are identified as:
Biology · Biodiversity and Conservation · MCQ
Q2.Which of the following simple tissues are commonly found in the fruit walls of nuts and pulp of pear?
Biology · Anatomy of Flowering Plants · MCQ
Q3.In a chromosome, there is a specific DNA sequence, responsible for initiating replication. It is called as:
Biology · Molecular Basis of Inheritance · MCQ
Q4.Given below are two statements: Statement I: When many alleles of a single gene govern a character, it is called polygenic inheritance. Statement II: In Polygenic inheritance, the effect of each allele is additive. In the light of the…
Biology · Principles of Inheritance and Variation · MCQ
Q5.Which of the following are required for the light reaction of Photosynthesis? A. $CO_{2}$ B. $O_{2}$ C. $H_{2} O$ D. Chlorophyll E. Light Choose the correct answer from the options given below:
Biology · Photosynthesis in Higher Plants · MCQ
Q6.Choose the correct answer from the options given below: Includes table
Biology · Cell the Unit of Life · MCQ
Q7.Match List-I with List-II: Choose the correct answer from the options given below: Includes table
Biology · Principles of Inheritance and Variation · MCQ
Q8.Which part of the ovule stores reserve food materials?
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q9.Which one of the following is not found in Gymnosperms?
Biology · Plant Kingdom · MCQ
Q10.Which one of the following is not included under in-situ conservation?
Biology · Biodiversity and Conservation · MCQ
Q11.Given below are two statements: Statement I : The Indian Government has set up GEAC, which will make decisions regarding the validity of GM research. Statement II : Biopiracy is the term used to refer to the use of bio-resources by native…
Biology · Biotechnology Principles and Processes · MCQ
Q12.Pollen grains remain preserved as fossils due to the presence of :
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q13.Identify the incorrect pair :
Biology · Plant Kingdom · MCQ
Q14.Which of the following is the correct match?
Biology · Plant Kingdom · MCQ
Q15.Given below are two statements regarding RNA polymerase in prokaryotes. Statement I : In prokaryotes, RNA polymerase is capable of catalysing the process of elongation during transcription. Statement II : RNA polymerase associate…
Biology · Molecular Basis of Inheritance · MCQ
Q16.Which of the following is a nucleotide?
Biology · Biomolecules · MCQ
Q17.Match List-I with List-II : Choose the correct answer from the options given below : Includes table
Biology · Morphology of Flowering Plants · MCQ
Q18.Match List-I with List-II : Choose the correct answer from the options given below : Includes table
Biology · Morphology of Flowering Plants · MCQ
Q19.Which of the following helps in maintenance of the pressure gradient in sieve tubes?
Biology · Transport in Plants · MCQ
Q20.Mesosome in a cell is a :
Biology · Cell the Unit of Life · MCQ
Q21.Match List-I with List-II : Choose the correct answer from the options given below: Includes table
Biology · Plant Growth and Development · MCQ
Q22.Match List-I with List - II : Choose the correct answer from the options given below: Includes table
Biology · Biotechnology Principles and Processes · MCQ
Q23.Match List-I with List-II: Choose the correct answer from the options given below : Includes table
Biology · Respiration in Plants · MCQ
Q24.Cryopreservation technique is used for :
Biology · Biodiversity and Conservation · MCQ
Q25.Which of the following are correct about cellular respiration? A. Cellular respiration is the breaking of C-C bonds of complex organic molecules by oxidation. B. The entire cellular respiration takes place in Mitochondria. C. Fermentation…
Biology · Respiration in Plants · MCQ
Q26.Given below are two statements: Statement I: In eukaryotes there are three RNA polymerases in the nucleus in addition to the RNA polymerase found in the organelles. Statement II: All the three RNA polymerases in eukaryotic nucleus have…
Biology · Molecular Basis of Inheritance · MCQ
Q27.Match List-I with List-II: Choose the correct answer from the options given below: Includes table
Biology · Cell the Unit of Life · MCQ
Q28.Given below are two statements: Statement I: Failure of segregation of chromatids during cell cycle resulting in the gain or loss of whole set of chromosome in an organism is known as aneuploidy. Statement II: Failure of cytokinesis after…
Biology · Cell Cycle and Cell Division · MCQ
Q29.Recombination between homologous chromosomes is completed by the end of
Biology · Cell Cycle and Cell Division · MCQ
Q30.Match List-I with List-II : Choose the correct answer from the options given below: Includes table
Biology · Cell Cycle and Cell Division · MCQ
Q31.Ligases is a class of enzymes responsible for catalysing the linking together of two compounds. Which of the following bonds is not catalysed by it?
Biology · Biomolecules · MCQ
Q32.F. Skoog observed that callus proliferated from the internodal segments of tobacco stem when auxin was supplied with one of the following except :
Biology · Plant Growth and Development · MCQ
Q33.Given below are some statements about plant growth regulators. A. All GAs are acidic in nature. B. Auxins are antagonists to GAs. C. Zeatin was isolated from coconut milk. D. Ethylene induces flowering in Mango. E. Abscisic acid induces…
Biology · Plant Growth and Development · MCQ
Q34.Identify the incorrect statement related to gel electrophoresis.
Biology · Biotechnology Principles and Processes · MCQ
Q35.Which of the following examples show monocarpellary, unilocular ovary with many ovules? A. Sesbania B. Brinjal C. Indigofera D. Tobacco E. Asparagus Choose the correct answer from the options given below :
Biology · Morphology of Flowering Plants · MCQ
Q36.Given below are two statements : Statement I: In the lac operon, the z gene codes for beta-galactosidase which is primarily responsible for the hydrolysis of lactose into galactose and glucose. Statement II: In addition to lactose, glucose…
Biology · Molecular Basis of Inheritance · MCQ
Q37.The part marked as ‘x’ in the given figure is Includes diagram
Biology · Sexual Reproduction in Flowering Plants · MCQ
Q38.Given below are two statements: Statement I: In a dicotyledonous leaf, the adaxial epidermis generally bears more stomata than the abaxial epidermis. Statement II: In a dicotyledonous leaf, the adaxially placed palisade parenchyma is made…
Biology · Anatomy of Flowering Plants · MCQ
Q39.Which of the following are not fatty acids? A. Glutamic acid B. Arachidonic acid C. Palmitic acid D. Lecithin E. Aspartic acid Choose the correct answer from the options given below :
Biology · Biomolecules · MCQ
Q40.Consider the pyramid of energy of an ecosystem given below: If T $_{4}$ is equivalent to $1000 J$ , what is the value at $T_{1}$ ? Includes diagram
Biology · Ecosystem · MCQ
Q41.Which one of the following products diffuses out of the chloroplast during photosynthesis?
Biology · Photosynthesis in Higher Plants · MCQ
Q42.Recombinant DNA molecule can be created normally by cutting the vector DNA and source DNA respectively with:
Biology · Biotechnology Principles and Processes · MCQ
Q43.Which one of the following is not a limitation of ecological pyramids?
Biology · Ecosystem · MCQ
Q44.The Bt toxin in genetically engineered Bt cotton kills the pest by:
Biology · Biotechnology Principles and Processes · MCQ
Q45.Match List-I with List-II: Choose the correct answer from the options given below: Includes table
Biology · Biological Classification · MCQ
Q46.Which of the following graphs depicts the effect of substrate concentration on velocity of enzyme catalysed reaction?
Biology · Biomolecules · MCQ
Q47.When will the population density increase, under special conditions? When the number of :
Biology · Organisms and Populations · MCQ
Q48.When a tall pea plant with round seeds was selfed, it produced the progeny of : (a) Tall plants with round seeds and (b) Tall plants with wrinkled seeds. Identify the genotype of the parent plant.
Biology · Principles of Inheritance and Variation · MCQ
Q49.Match List-I with List-II: Choose the correct answer from the options given below: Includes table
Biology · Biodiversity and Conservation · MCQ
Q50.Observe the given figure. Identify the different stages labelled with alphabets by selecting the correct option. Includes diagram
Biology · Photosynthesis in Higher Plants · MCQ
Q51.Match List-I with List-II: Chose the correct answer from the options given below: Includes table
Biology · Organisms and Populations · MCQ
Q52.Match List-I with List-II: Chose the correct answer from the options given below: Includes table
Biology · Locomotion and Movement · MCQ
Q53.Following are the steps involved in action of toxin in Bt. Cotton A. The inactive toxin converted into active form due to alkaline pH of gut of insect. B. Bacillus thuringiensis produce crystals with toxic insecticidal proteins. C. The…
Biology · Biotechnology and Its Applications · MCQ
Q54.Match List-I with List-II : Choose the correct answer from the options given below : Includes table
Biology · Evolution · MCQ
Q55.Which evolutionary phenomenon is depicted by the sketch given in figure? Includes diagram
Biology · Evolution · MCQ
Q56.A person with blood group ARh– can receive the blood transfusion from which of the following types? A. BRh $^{-}$ B. ABRh $^{-}$ C. ORh $^{-}$ D. ARh $^{-}$ E. ARh $^{+}$ Choose the correct answer from the options given below :
Biology · Body Fluids and Its Circulation · MCQ
Q57.Enzymes that catalyse the removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds, are known as :
Biology · Biomolecules · MCQ
Q58.Match List-I with List-II. Choose the correct answer from the options given below : Includes table
Biology · Cell Cycle and Cell Division · MCQ
Q59.Match List-I with List-II. Choose the correct answer from the options given below : Includes table
Biology · Biomolecules · MCQ
Q60.Match List-I with List-II. Choose the correct answer from the options given below : Includes table
Biology · Chemical Coordination and Integration · MCQ
Q61.Which of the following statements is correct about the type of junction and their role in our body?
Biology · Cell the Unit of Life · MCQ
Q62.Select the restriction endonuclease enzymes whose restriction sites are present for the tetracycline resistance (tet $^{R}$ ) gene in the pBR322 cloning vector.
Biology · Biotechnology Principles and Processes · MCQ
Q63.Match List-I with List-II. Choose the correct answer from the options given below : Includes table
Biology · Animal Kingdom · MCQ
Q64.Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: During menstrual cycle, the ovulation takes place approximately on 14th day. Reason R: Rapid secretion of LH in the middle…
Biology · Human Reproduction · MCQ
Q65.Match List-I with List-II with respect to convergent evolution: Choose the correct answer from the options given below: Includes table
Biology · Evolution · MCQ
Q66.Match List-I with List-II. Choose the correct answer from the options given below: Includes table
Biology · Cell Cycle and Cell Division · MCQ
Q67.Match List-I with List-II. Choose the correct answer from the options given below: Includes table
Biology · Organisms and Populations · MCQ
Q68.Match List-I with List-II relating to microbes and their products: Choose the correct answer from the options given below: Includes table
Biology · Microbes in Human Welfare · MCQ
Q69.Match List-I with List-II. Choose the correct answer from the options given below: Includes table
Biology · Cell the Unit of Life · MCQ
Q70.Match List-I with List-II relating to examples of various kind of IUDs and barrier: Choose the correct answer from the options given below: Includes table
Biology · Reproductive Health · MCQ
Q71.Given below are two statements: Statement I: Antibiotics are chemicals produced by microbes that kill other microbes. Statement II: Antibodies are chemicals formed in body that eliminate microbes. In the light of the above statements,…
Biology · Human Health and Diseases · MCQ
Q72.Arrange the following parts in human Mammary gland, traversing the route of milk ejection. A. Mammary duct B. Lactiferous duct C. Mammary alveolus D. Ampulla E. Mammary tubule Choose the correct answer from the options given below:
Biology · Human Reproduction · MCQ
Q73.Which of the following are correct about EcoRI? A. Cut the DNA with blunt end B. Cut the DNA with sticky end C. Recognise a specific palindromic sequence D. Cut the DNA between the base $G$ and $A$ when encounters the DNA…
Biology · Biotechnology Principles and Processes · MCQ
Q74.Which of the following is/are present in female cockroach? A. Collateral gland B. Mushroom gland C. Spermatheca D. Anal style E. Phallic gland Choose the most appropriate answer from the options given below:
Biology · Structural Organisation in Animals · MCQ
Q75.Math List-I with List-II: Choose the correct answer from the options given below: Includes table
Biology · Human Health and Diseases · MCQ
Q76.Open Circulatory system is present in :
Biology · Animal Kingdom · MCQ
Q77.In which of the following connective tissues, the cells secrete fibres of collagen or elastin? A. Cartilage B. Bone C. Adipose tissue D. Blood E. Areolar tissue Choose the most appropriate answer from the options given below :
Biology · Structural Organisation in Animals · MCQ
Q78.Which of the following pairs is an incorrect match?
Biology · Animal Kingdom · MCQ
Q79.Match List-I with List-II: Choose the correct answer from the options given below: Includes table
Biology · Breathing and Exchange of Gases · MCQ
Q80.Match List I with List II: Choose the correct answer from the options given below: Includes table
Biology · Evolution · MCQ
Q81.Match List-I with List -II Choose the correct answer from the options given below: Includes table
Biology · Neural Control and Coordination · MCQ
Q82.Diuresis is prevented by:
Biology · Body Fluids and Its Circulation · MCQ
Q83.Following is the list of STDs. Select the diseases which are not completely curable. A. Genital warts B. Genital herpes C. Syphilis D. Hepatitis-B E. Trichomoniasis Choose the correct answer from the options given below:
Biology · Reproductive Health · MCQ
Q84.What is the correct order (old to recent) of periods in Paleozoic era?
Biology · Evolution · MCQ
Q85.'Lub' sound of Heart is caused by the _________.
Biology · Body Fluids and Its Circulation · MCQ
Q86.Match List-I with List-II relating to human female external genitalia. Choose the correct answer from the option given below : Includes table
Biology · Human Reproduction · MCQ
Q87.Aneuploidy is a chromosomal disorder where chromosome number is not the exact copy of its haploid set of chromosomes, due to : A. Substitution B. Addition C. Deletion D. Translocation E. Inversion Choose the most appropriate answer from…
Biology · Principles of Inheritance and Variation · MCQ
Q88.Given below are two statements : Statement I : RNA interference takes place in all Eukaryotic organisms as method of cellular defense. Statement II : RNAi involves the silencing of a specific mRNA due to a complementary single-stranded RNA…
Biology · Molecular Basis of Inheritance · MCQ
Q89.Identify the wrong statements : A. Erythropoietin is produced by juxtaglomerular cells of the kidney B. Leydig cells produce Androgens C. Atrial Natriuretic factor, a peptide hormone is secreted by the seminiferous tubules of the testes D.…
Biology · Chemical Coordination and Integration · MCQ
Q90.Following are the steps involved in the process of PCR. A. Annealing B. Amplification (~1 billion times) C. Denaturation D. Treatment with Taq polymerase and deoxynucleotides E. Extension Choose the correct sequence of steps of PCR from…
Biology · Biotechnology Principles and Processes · MCQ
Q91.Given below are two statements: Statements I: Concentrated urine is formed due to counter current mechanism in nephron. Statement II: Counter current mechanism helps to maintain osmotic gradient in the medullary interstitium. In the light…
Biology · Excretory Products and Their Elimination · MCQ
Q92.Given below are two statements : Statement I : Concentrically arranged cisternae of Golgi complex are arranged near the nucleus with distinct convex cis or maturing and concave trans or forming face. Statement II : A number of proteins are…
Biology · Cell the Unit of Life · MCQ
Q93.Match List-I with List-II: Choose the correct answer from the option given below: Includes table
Biology · Human Reproduction · MCQ
Q94.Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Members of subphylum vertebrata possess notochord during the embryonic period. The notochord is replaced by a cartilaginous…
Biology · Animal Kingdom · MCQ
Q95.The mother has $A +$ blood group the father has $B +$ and the child is $A +$ . What can be the possibility of genotypes of all three, respectively? A. $I^{A} I^{A} ∣ I B i ∣ I^{B} i$ B. $I^{A} I^{A} I^{B} i I^{A} i$ C. $I^{B} i I^{A} I^{A} I^{A} I^{B}$ …
Biology · Principles of Inheritance and Variation · MCQ
Q96.What do 'a' and 'b' represent in the following population growth curve? Includes diagram
Biology · Organisms and Populations · MCQ
Q97.Select the correct statements regarding mechanism of muscle contraction. A. It is initiated by a signal sent by CNS via sensory neuron. B. Neurotransmitter generates action potential in the sarcolemma. C. Increased Ca $^{++}$ level leads to…
Biology · Locomotion and Movement · MCQ
Q98.Match List I with List II : Choose the correct answer from the options given below : Includes table
Biology · Structural Organisation in Animals · MCQ
Q99.Match List I with List II : Choose the correct answer from the options given below : Includes table
Biology · Human Health and Diseases · MCQ
Q100.Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: During the transportation of gases, about 20-25 percent of CO $_{2}$ is carried by Haemoglobin as carbamino-haemoglobin. Reason…
Biology · Breathing and Exchange of Gases · MCQ
Q101.The correct decreasing order of atomic radii (pm) of $Li, Be, B$ and $C$ is
Chemistry · Periodic Table and Periodicity · MCQ
Q102.Following data is for a reaction between reactants A and B : $The order of the reaction with respect to A and B, respectively, are$ Includes table
Chemistry · Chemical Kinetics · MCQ
Q103.Given below are two statements: Statement I: Propene on treatment with diborane gives an addition product with the formula Statement II: Oxidation of with hydrogen peroxide in presence of $NaOH$ gives propan-2ol. In the light of… Includes diagram
Chemistry · Hydrocarbons · MCQ
Q104.Baeyer's reagent is :
Chemistry · D and F Block Elements · MCQ
Q105.Which of the following molecules has "NON ZERO" dipole moment value?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q106.The major product X formed in the following reaction sequence is : Includes diagram
Chemistry · Organic Compounds Containing Nitrogen · MCQ
Q107.Which indicator is used in the titration of sodium hydroxide against oxalic acid and what is the colour change at the end point?
Chemistry · Ionic Equilibrum · MCQ
Q108.Match List I with List II : Identify the correct answer from the options given below : Includes table
Chemistry · Periodic Table and Periodicity · MCQ
Q109.From the following select the one which is not an example of corrosion.
Chemistry · Electrochemistry · MCQ
Q110.Which of the following pairs of ions will have same spin only magnetic moment values within the pair? A. $Zn^{2 +}, Ti^{2 +}$ B. $Cr^{2 +}, Fe^{2 +}$ C. $Ti^{3 +}, Cu^{2 +}$ D. $V^{2 +}, Cu^{+}$ …
Chemistry · D and F Block Elements · MCQ
Q111.At a given temperature and pressure, the equilibrium constant values for the equilibria are given below: $3 A_{2} + B_{2} ⇌ 2 A_{3} B, K_{1} A_{3} B ⇌ \frac{3}{2} A_{2} + \frac{1}{2} B_{2}, K_{2}$ …
Chemistry · Chemical Equilibrium · MCQ
Q112.Arrange the following compounds in increasing order of their solubilities in chloroform: $NaCl, CH_{3} OH$ , cyclohexane, $CH_{3} CN$
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q113.Identify the incorrect statement about $PCl_{5}$ .
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q114.Choose the correct statement for the work done in the expansion and heat absorbed or released when 5 litres of an ideal gas at 10 atmospheric pressure isothermally expands into vacuum until volume is 15 litres :
Chemistry · Thermodynamics · MCQ
Q115.The correct IUPAC name of the compound is : Includes diagram
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q116.Which of the following set of ions act as oxidising agents?
Chemistry · D and F Block Elements · MCQ
Q117.Select the incorrect reaction among the following :
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q118.The UV-visible absorption bands in the spectra of lanthanoid ions are 'X', probably because of the excitation of electrons involving 'Y'. The 'X' and 'Y', respectively, are : Narrow and d and f orbitals
Chemistry · D and F Block Elements · MCQ
Q119.Ethylene diaminetetraacetate ion is a/an:
Chemistry · Coordination Compounds · MCQ
Q120.The amount of glucose required to prepare $250 mL$ of $\frac{M}{20}$ aqueous solution is : (Molar mass of glucose : $180 g mol^{- 1}$ )
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q121.Identify the incorrect statement from the following :
Chemistry · P Block Elements · MCQ
Q122.For the reaction in equilibrium $N_{2} (g) + 3 H_{2} (g) ⇌ 2 NH_{3} (g), Δ H = - Q$ Reaction is favoured in forward direction by:
Chemistry · Chemical Equilibrium · MCQ
Q123.The major product D formed in the following reaction sequence is : Includes diagram
Chemistry · Alcohol Phenols and Ethers · MCQ
Q124.Match List I with List II: Choose the correct answer from the options given below: Includes table
Chemistry · D and F Block Elements · MCQ
Q125.Which of the following is not an ambidentate ligand?
Chemistry · Coordination Compounds · MCQ
Q126.The quantum numbers of four electrons are given below : I. $n = 4; I = 2; m_{1} = - 2; s = - \frac{1}{2}$ II. $n = 3; I = 2; m_{1} = 1; s = + \frac{1}{2}$ III. $n = 4; I = 1; m_{1} = 0; s = + \frac{1}{2}$ IV. $n = 3; I = 1; m_{1} = - 1; s = + \frac{1}{2}$ The…
Chemistry · Structure of Atom · MCQ
Q127.The major product $C$ in the below mentioned reaction is: $CH_{3} CH_{2} CH_{2} Br alc. KOH Δ A HBr B aq. KOH Δ C$ …
Chemistry · Haloalkanes and Haloarenes · MCQ
Q128.The compound that does not undergo Friedel-Crafts alkylation reaction but gives a positive carbylamine test is :
Chemistry · Organic Compounds Containing Nitrogen · MCQ
Q129.For an endothermic reaction: (A) $q_{p}$ is negative. (B) $Δ_{r} H$ is positive. (C) $Δ_{r} H$ is negative. (D) $q_{p}$ is positive. Choose the correct answer…
Chemistry · Thermodynamics · MCQ
Q130. $1.0 g$ of $H_{2}$ has same number of molecules as in:
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q131.Which of the following plot represents the variation of $ln k$ versus $\frac{1}{T}$ in accordance with Arrhenius equation?
Chemistry · Chemical Kinetics · MCQ
Q132.A steam volatile organic compound which is immiscible with water has a boiling point of $25 0^{\circ} C$ . During steam distillation, a mixture of this organic compound and water will boil :
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q133.Given below are two statements : Statement I : Glycogen is similar to amylose in its structure. Statement II : Glycogen is found in yeast and fungi also. In the light of the above statements, choose the correct answer from the options…
Chemistry · Biomolecules · MCQ
Q134.The oxidation states not shown by Mn in given reaction is : $3 MnO_{4}^{2 -} + 4 H^{+} ⟶ 2 MnO_{4}^{-} + MnO_{2} + 2 H_{2} O$ A. +6 B. +2 C. +4 D. +7 E. +3 Choose the most…
Chemistry · Redox Reactions · MCQ
Q135.Given below are two statements: Statement I: The Balmer spectral line for H atom with lowest energy is located at $\frac{5}{36} R_{H} cm^{- 1}$ . ( $R_{H} =$ Rydberg constant) Statement II: When the temperature of…
Chemistry · Structure of Atom · MCQ
Q136.Identify D in the following sequence of reactions: Includes diagram
Chemistry · Alcohol Phenols and Ethers · MCQ
Q137.Identify the incorrect statement.
Chemistry · D and F Block Elements · MCQ
Q138.Match List-I with List-II : Choose the correct answer from the options given below : Includes table
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q139.Match List-I with List-II: Choose the correct answer from the options given below: Includes table
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q140.The standard cell potential of the following cell $Zn Zn^{2 +} (aq) Fe^{2 +} (aq) ∣ Fe$ is $0.32 V$ . Calculate the standard Gibbs energy change for the reaction: $Zn (s) + Fe^{2 +} (aq) \to Zn^{2 +} (aq) + Fe (s)$ …
Chemistry · Electrochemistry · MCQ
Q141.Match List I with List II: Choose the correct answer from the options given below: Includes table
Chemistry · P Block Elements · MCQ
Q142.The ratio of solubility of AgCl in 0.1 M KCl solution to the solubility of AgCl in water is: (Given : Solubility product of AgCl = 10 $^{-10}$ )
Chemistry · Ionic Equilibrum · MCQ
Q143.On complete combustion, 0.3 g of an organic compound gave 0.2 g of CO $_{2}$ and 0.1 g of H $_{2}$ O. The percentage composition of carbon and hydrogen in the compound, respectively is:
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q144.The following reaction method is not suitable for the preparation of the corresponding haloarene products, due to high reactivity of halogen, when X is : Includes diagram
Chemistry · Haloalkanes and Haloarenes · MCQ
Q145.The alkane that can be oxidized to the corresponding alcohol by KMnO $_{4}$ as per the equation is, when : Includes diagram
Chemistry · Hydrocarbons · MCQ
Q146.For the following reaction at $300 K$ $A_{2} (g) + 3 B_{2} (g) \to 2 AB_{3} (g)$ the enthalpy change is $+ 15 kJ$ , then the internal energy change is :
Chemistry · Thermodynamics · MCQ
Q147.Rate constants of a reaction at $500 K$ and $700 K$ are $0.04 s^{- 1}$ and $0.14 s^{- 1}$ , respectively; then, activation energy of the reaction is : (Given: $lo g 3.5 = 0.5441, R = 8.31 J K^{- 1} mol^{- 1}$ …
Chemistry · Chemical Kinetics · MCQ
Q148.Mass of glucose $(C_{6} H_{12} O_{6})$ required to be dissolved to prepare one litre of its solution which is isotonic with $15 g L^{- 1}$ solution of urea $(NH_{3} CONH_{2})$ …
Chemistry · Solutions · MCQ
Q149. $[Mn_{2} (CO)_{10}]$ and $[Co_{2} (CO)_{8}]$ structures have A. Metal-Metal linkage B. Terminal CO groups C. Bridging CO groups D. Metal in zero oxidation state Choose the correct…
Chemistry · Coordination Compounds · MCQ
Q150.Methyl group attached to a positively charged carbon atom stabilizes the carbocation due to
Chemistry · Some Basic Concepts of Organic Chemistry · MCQ
Q151.The magnetic potential energy, when a magnetic bar of magnetic moment $m$ is placed perpendicular to the magnetic field $B$ is
Physics · Magnetism and Matter · MCQ
Q152.A bob is whirled in a horizontal circle by means of a string at an initial speed of $10 rpm$ . If the tension in the string is quadrupled while keeping the radius constant, the new speed is:
Physics · Motion in A Plane · MCQ
Q153.A metal cube of side $5 cm$ is charged with $6 μ C$ . The surface charge density on the cube is
Physics · Electrostatics · MCQ
Q154.The incorrect relation for a diamagnetic material (all the symbols carry their usual meaning and $ε$ is a small positive number) is
Physics · Magnetism and Matter · MCQ
Q155.An ideal fluid is flowing in a non-uniform cross-sectional tube $X Y$ (as shown in the figure) from end $X$ to end $Y$ . If $K_{1}$ and $K_{2}$ are the kinetic energy per unit volume of the fluid at $X$ and $Y$ respectively, then the correct… Includes diagram
Physics · Properties of Matter · MCQ
Q156.The escape velocity for earth is $v$ . A planet having 9 times mass that of earth and radius, 16 times that of earth, has the escape velocity of:
Physics · Gravitation · MCQ
Q157.An electron and an alpha particle are accelerated by the same potential difference. Let $λ_{e}$ and $λ_{α}$ denote the de-Broglie wavelengths of the electron and the alpha particle, respectively, then:
Physics · Dual Nature of Radiation and Matter · MCQ
Q158.An object moving along horizontal $x$ -direction with kinetic energy $10 J$ is displaced through $x = (3 \hat{i}) m$ by the force $F = (- 2 \hat{i} + 3 \hat{j}) N$ . The kinetic energy of the object at the end…
Physics · Work Energy and Power · MCQ
Q159.An object falls from a height of $10 m$ above the ground. After striking the ground it loses $50%$ of its kinetic energy. The height upto which the object can rebounce from the ground is:
Physics · Work Energy and Power · MCQ
Q160.In the circuit shown below, the inductance $L$ is connected to an ac source. The current flowing in the circuit is $I = I_{0} sin ω t$ . The voltage drop $(V_{L})$ across $L$ is Includes diagram
Physics · Alternating Current · MCQ
Q161.A $12 pF$ capacitor is connected to a $50 V$ battery, the electrostatic energy stored in the capacitor in $nJ$ is
Physics · Capacitor · MCQ
Q162.A uniform wire of diameter $d$ carries a current of $100 mA$ when the mean drift velocity of electrons in the wire is $v$ . For a wire of diameter $\frac{d}{2}$ of the same material to carry a current of $200 mA$ , the…
Physics · Current Electricity · MCQ
Q163.In an electrical circuit, the voltage is measured as $V = (200 \pm 4)$ volt and the current is measured as $I = (20 \pm 0.2)$ A. The value of the resistance is:
Physics · Units and Measurement · MCQ
Q164.A step up transformer is connected to an ac mains supply of $220 V$ to operate at $11000 V, 88$ watt. The current in the secondary circuit, ignoring the power loss in the transformer, is
Physics · Alternating Current · MCQ
Q165.A particle is moving along $x$ -axis with its position (x) varying with time $(t)$ as $x = α t^{4} + β t^{2} + γ t + δ$ . The ratio of its initial velocity to its initial acceleration, respectively, is:
Physics · Motion in A Straight Line · MCQ
Q166.The radius of gyration of a solid sphere of mass $5 kg$ about $X Y$ is $5 m$ as shown in figure. The radius of the sphere is $\frac{5 x}{7} m$ , then the value of $x$ is: Includes diagram
Physics · Rotational Motion · MCQ
Q167.The I-V characteristics shown above are exhibited by a Includes diagram
Physics · Semiconductor Electronics · MCQ
Q168.The magnetic moment and moment of inertia of a magnetic needle as shown are, respectively, $1.0 \times 1 0^{- 2} A m^{2}$ and $\frac{1 0 ^{- 6}}{π ^{2}} kg m^{2}$ . If it completes 10 oscillations in $10 s$ … Includes diagram
Physics · Magnetism and Matter · MCQ
Q169.The capacitance of a capacitor with charge $q$ and a potential difference $V$ depends on
Physics · Capacitor · MCQ
Q170.Given below are two statements: Statement I : Image formation needs regular reflection and/or refraction. Statement II : The variety in colour of objects we see around us is due to the constituent colours of the light incident on them. In…
Physics · Geometrical Optics · MCQ
Q171.A uniform metal wire of length $l$ has $10Ω$ resistance. Now this wire is stretched to a length $2 l$ and then bent to form a perfect circle. The equivalent resistance across any arbitrary diameter of that circle is
Physics · Current Electricity · MCQ
Q172.The spectral series which corresponds to the electronic transition from the levels $n_{2} = 5, 6, \dots$ to the level $n_{1} = 4$ is
Physics · Atoms and Nuclei · MCQ
Q173.Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$ . Assertion A: Houses made of concrete roofs overlaid with foam keep the room hotter during summer. Reason R: The…
Physics · Heat and Thermodynamics · MCQ
Q174.A particle executing simple harmonic motion with amplitude A has the same potential and kinetic energies at the displacement
Physics · Oscillations · MCQ
Q175.Two slits in Young's double slit experiment are $1.5 mm$ apart and the screen is placed at a distance of $1 m$ from the slits. If the wavelength of light used is $600 \times 1 0^{- 9} m$ then the fringe…
Physics · Wave Optics · MCQ
Q176.Water is used as a coolant in a nuclear reactor because of its
Physics · Atoms and Nuclei · MCQ
Q177.The pitch of an error free screw gauge is $1 mm$ and there are 100 divisions on the circular scale. While measuring the diameter of a thick wire, the pitch scale reads $1 mm$ and $6 3^{rd}$ division on the…
Physics · Units and Measurement · MCQ
Q178.Let us consider two solenoids $A$ and $B$ , made from same magnetic material of relative permeability $μ_{r}$ and equal area of cross-section. Length of $A$ is twice that of $B$ and the number of turns per unit length in $A$ is half that of…
Physics · Electromagnetic Induction · MCQ
Q179.When the output of an OR gate is applied as input to a NOT gate, then the combination acts as a
Physics · Semiconductor Electronics · MCQ
Q180.Interference pattern can be observed due to superposition of the following waves: A. $y = a sin ω t$ B. $y = a sin 2 ω t$ C. $y = a sin (ω t - ϕ)$ D. $y = a sin 3 ω t$ Choose the correct answer from the options given…
Physics · Wave Optics · MCQ
Q181.If $ϕ$ is the work function of photosensitive material in $eV$ and light of wavelength of numerical value $λ = \frac{h c}{e}$ metre, is incident on it with energy above its threshold value at an instant then the maximum…
Physics · Dual Nature of Radiation and Matter · MCQ
Q182.The electromagnetic radiation which has the smallest wavelength are
Physics · Electromagnetic Waves · MCQ
Q183.The equilibrium state of a thermodynamic system is described by A. Pressure B. Total heat C. Temperature D. Volume E. Work done Choose the most appropriate answer from the options given below.
Physics · Heat and Thermodynamics · MCQ
Q184.Some energy levels of a molecule are shown in the figure with their wavelengths of transitions. Then : Includes diagram
Physics · Atoms and Nuclei · MCQ
Q185.A box of mass $5 kg$ is pulled by a cord, up along a frictionless plane inclined at $3 0^{\circ}$ with the horizontal. The tension in the cord is $30 N$ . The acceleration of the box is (Take $g = 10 m s^{- 2}$ …
Physics · Laws of Motion · MCQ
Q186.If the ratio of relative permeability and relative permittivity of a uniform medium is $1 : 4$ . The ratio of the magnitudes of electric field intensity $(E)$ to the magnetic field intensity $(H)$ of an EM wave propagating in that medium is…
Physics · Electromagnetic Waves · MCQ
Q187.The value of electric potential at a distance of $9 cm$ from the point charge $4 \times 1 0^{- 7} C$ is [Given $\frac{1}{4 π ε _{0}} = 9 \times 1 0^{9} N m^{2} C^{- 2}$ ] :
Physics · Electrostatics · MCQ
Q188.The displacement of a travelling wave $y = C sin \frac{2 π}{λ}$ (at $- x$ ) where $t$ is time, $x$ is distance and $λ$ is the wavelength, all in S.I. units. Then the frequency of the wave is
Physics · Waves · MCQ
Q189.An object of mass $100 kg$ falls from point $A$ to $B$ as shown in figure. The change in its weight, corrected to the nearest integer is ( $R_{E}$ is the radius of the earth) Includes diagram
Physics · Gravitation · MCQ
Q190.The potential energy of a particle moving along $x$ -direction varies as $V = \frac{A x ^{2}}{x + B}$ . The dimensions of $\frac{A ^{2}}{B}$ are:
Physics · Units and Measurement · MCQ
Q191.The two-dimensional motion of a particle, described by $r = (\hat{i} + 2 \hat{j}) A cos ω t$ is a/an: A. parabolic path B. elliptical path C. periodic motion D. simple harmonic motion Choose the correct answer from the options…
Physics · Oscillations · MCQ
Q192.A beam of unpolarized light of intensity I0 is passed through a polaroid A, then through another polaroid B, oriented at $6 0^{\circ}$ and finally through another polaroid C, oriented at 45 $^{\circ}$ relative to B as shown. The intensity of… Includes diagram
Physics · Wave Optics · MCQ
Q193.Select the correct statements among the following : A. Slow neutrons can cause fission in $_{92}^{235} U$ than fast neutrons. B. $α$ -rays are Helium nuclei. C. $β$ -rays are fast moving electrons or positrons. D. $γ$ …
Physics · Atoms and Nuclei · MCQ
Q194.Let $ω_{1}, ω_{2}$ and $ω_{3}$ be the angular speed of the second hand, minute hand and hour hand of a smoothly running analog clock, respectively. If $x_{1}, x_{2}$ and $x_{3}$ are their respective angular distances in 1 minute then…
Physics · Motion in A Plane · MCQ
Q195.The magnetic moment of an iron bar is $M$ . It is now bent in such a way that it forms an arc section of a circle subtending an angle of $6 0^{\circ}$ at the centre. The magnetic moment of this arc section is
Physics · Magnetism and Matter · MCQ
Q196.The given circuit shows a uniform straight wire $A B$ of $40 cm$ length fixed at both ends. In order to get zero reading in the galvanometer $G$ , the free end of $J$ is to be placed from $B$ at: Includes diagram
Physics · Current Electricity · MCQ
Q197.According to the law of equipartition of energy, the number of vibrational modes of a polyatomic gas of constant $γ = \frac{C _{p}}{C _{v}}$ is ( $C_{P}$ where $C_{V}$ are the specific heat capacities of the gas at constant pressure and constant…
Physics · Heat and Thermodynamics · MCQ
Q198.The output Y for the inputs A and B of the given logic circuit is: Includes diagram
Physics · Semiconductor Electronics · MCQ
Q199.The amplitude of the charge oscillating in a circuit decreases exponentially as $Q = Q_{0} e^{- R t /2 L}$ , where $Q_{0}$ is the charge at $t = 0 s$ . The time at which charge amplitude decreases to $0.50 Q_{0}$ is nearly: [Given that $R = 1.5Ω, L = 12 mH, ln (2) = 0.693$ …
Physics · Alternating Current · MCQ
Q200.The steady state current in the circuit shown below is : Includes diagram
Physics · Capacitor · MCQ