2021 · 26 Aug · Shift 1
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2021 · 26 Aug · Shift 1
70 questions · JEE Main
Practical Organic ChemistryChemistry · 1 questionsD and F Block ElementsChemistry · 2 questionsAldehydes Ketones and Carboxylic AcidsChemistry · 2 questionsCompounds Containing NitrogenChemistry · 1 questionsHaloalkanes and HaloarenesChemistry · 3 questionsElectrochemistryChemistry · 2 questionsAlcohols Phenols and EthersChemistry · 1 questionsIonic EquilibriumChemistry · 1 questionsStructure of AtomChemistry · 1 questionsChemical Bonding and Molecular StructureChemistry · 1 questionsSolutionsChemistry · 1 questionsChemical EquilibriumChemistry · 1 questionsCoordination CompoundsChemistry · 1 questionsChemical Kinetics and Nuclear ChemistryChemistry · 1 questionsThermodynamicsChemistry · 1 questionsBiomoleculesChemistry · 1 questionsSome Basic Concepts of ChemistryChemistry · 1 questionsStatisticsMathematics · 1 questionsDifferential EquationsMathematics · 1 questionsProbabilityMathematics · 1 questionsMatrices and DeterminantsMathematics · 2 questionsDifferentiationMathematics · 2 questionsSets and RelationsMathematics · 1 questionsComplex NumbersMathematics · 2 questionsCircleMathematics · 2 questionsDefinite IntegrationMathematics · 1 questionsSequences and SeriesMathematics · 1 questionsQuadratic Equation and InequalitiesMathematics · 1 questionsPermutations and CombinationsMathematics · 2 questionsApplication of DerivativesMathematics · 1 questionsArea Under the CurvesMathematics · 1 questionsLimits Continuity and DifferentiabilityMathematics · 1 questionsMagneticsPhysics · 2 questionsVector AlgebraPhysics · 1 questionsGeometrical OpticsPhysics · 1 questionsGravitationPhysics · 1 questionsProperties of MatterPhysics · 2 questionsHeat and ThermodynamicsPhysics · 2 questionsElectromagnetic InductionPhysics · 1 questionsAlternating CurrentPhysics · 1 questionsElectronic DevicesPhysics · 2 questionsAtoms and NucleiPhysics · 1 questionsDual Nature of RadiationPhysics · 1 questionsCurrent ElectricityPhysics · 2 questionsElectrostaticsPhysics · 1 questionsUnits and MeasurementsPhysics · 2 questionsLaws of MotionPhysics · 1 questionsCapacitorPhysics · 1 questionsWork Power and EnergyPhysics · 1 questionsElectromagnetic WavesPhysics · 1 questionsMotion in A Straight LinePhysics · 1 questionsWavesPhysics · 1 questionsWave OpticsPhysics · 1 questionsRotational MotionPhysics · 1 questions
- Q1.Which one of the following complexes is violet in colour?Chemistry · Practical Organic Chemistry · MCQ
- Q2.Which one of the following when dissolved in water gives coloured solution in nitrogen atmosphere?Chemistry · D and F Block Elements · MCQ
- Q3.The major products formed in the following reaction sequence A and B are : Includes diagramChemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
- Q4.The major product formed in the following reaction is : Includes diagramChemistry · Compounds Containing Nitrogen · MCQ
- Q5.The major product formed in the following reaction is : Includes diagramChemistry · Haloalkanes and Haloarenes · MCQ
- Q6.Given below are two statements : Statement I : The limiting molar conductivity of (strong electrolyte) is higher compared to that of (weak electrolyte). Statement II : Molar conductivity decreases with decrease in…Chemistry · Electrochemistry · MCQ
- Q7.The correct options for the products A and B of the following reactions are : Includes diagramChemistry · Alcohols Phenols and Ethers · MCQ
- Q8.Given below are two statements. Statement I : In the titration between strong acid and weak base methyl orange is suitable as an indicator. Statement II : For titration of acetic acid with NaOH phenolphthalein is not a suitable indicator.…Chemistry · Ionic Equilibrium · MCQ
- Q9.Among the following compounds I-IV, which one forms a yellow precipitate on reacting sequentially with (i) (ii) dil. (iii) ? Includes diagramChemistry · Haloalkanes and Haloarenes · MCQ
- Q10.Given below are two statements. Statement I : According to Bohr's model of an atom, qualitatively the magnitude of velocity of electron increases with decrease in positive charges on the nucleus as there is no strong hold on the electron…Chemistry · Structure of Atom · MCQ
- Q11.The correct sequential addition of reagents in the preparation of 3-nitrobenzoic acid from benzene is :Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
- Q12.Excess of isobutane on reaction with in presence of light at 125 C gives which one of the following, as the major product?Chemistry · Haloalkanes and Haloarenes · MCQ
- Q13. is an interhalogen T-shaped molecule. The number of lone pairs of electrons on A is . (Integer answer)Chemistry · Chemical Bonding and Molecular Structure · Numerical
- Q14.These are physical properties of an element (A) Sublimation enthalpy (B) Ionisation enthalpy (C) Hydration enthalpy (D) Electron gain enthalpy The total number of above properties that affect the reduction potential is …Chemistry · Electrochemistry · Numerical
- Q15.Of the following four aqueous solutions, total number of those solutions whose freezing point is lower than that of 0.10 M is (Integer answer) (i) 0.10 M (ii) 0.10 M (iii)…Chemistry · Solutions · Numerical
- Q16.The concentration in a mixture of 5.0 mL of 0.0504 M and 2 mL of 0.0210 M solution is x 10 6 M. The value of x is . (Nearest integer) [Given Kw = 1 10 14 and Kb =…Chemistry · Chemical Equilibrium · Numerical
- Q17.The number of 4f electrons in the ground statement electronic configuration of is . [Atomic number of Gd = 64]Chemistry · D and F Block Elements · Numerical
- Q18.The ratio of number of water molecules in Mohr's salt and potash alum is 10 1. (Integer answer)Chemistry · Coordination Compounds · Numerical
- Q19.The following data was obtained for chemical reaction given below at 975 K. 2(g) + 2(g) (g) + 2(g) The order of the reaction with respect to is . [Integer answer] Includes diagramChemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
- Q20.The Born-Haber cycle for is evaluated with the following data : for = 436.7 kJ mol 1 ; for K = 89.2 kJ mol 1 ; for K = 419.0…Chemistry · Thermodynamics · Numerical
- Q21.The total number of negative charge in the tetrapeptide, Gly-Glu-Asp-Tyr, at pH 12.5 will be . (Integer answer)Chemistry · Biomolecules · Numerical
- Q22.An aqueous KCl solution of density 1.20 g mL 1 has a molality of 3.30 mol kg 1. The molarity of the solution in mol L 1 is (Nearest integer) [Molar mass of KCl = 74.5]Chemistry · Some Basic Concepts of Chemistry · Numerical
- Q23.The mean and standard deviation of 20 observations were calculated as 10 and 2.5 respectively. It was found that by mistake one data value was taken as 25 instead of 35. if and are the mean and standard deviation…Mathematics · Statistics · MCQ
- Q24.Let y = y(x) be a solution curve of the differential equation , . If , then the value of …Mathematics · Differential Equations · MCQ
- Q25.Let A and B be independent events such that P(A) = p, P(B) = 2p. The largest value of p, for which P (exactly one of A, B occurs) = , is :Mathematics · Probability · MCQ
- Q26.Let . If the system of linear equations …Mathematics · Matrices and Determinants · MCQ
- Q27.Let , 0 < x < 1. Then :Mathematics · Differentiation · MCQ
- Q28.Out of all the patients in a hospital 89% are found to be suffering from heart ailment and 98% are suffering from lungs infection. If K% of them are suffering from both ailments, then K can not belong to the set :Mathematics · Sets and Relations · MCQ
- Q29.The equation represents a circle with :Mathematics · Complex Numbers · MCQ
- Q30.If a line along a chord of the circle 4x2 + 4y2 + 120x + 675 = 0, passes through the point ( 30, 0) and is tangent to the parabola y2 = 30x, then the length of this chord is :Mathematics · Circle · MCQ
- Q31.The value of is :Mathematics · Definite Integration · MCQ
- Q32.If , …Mathematics · Matrices and Determinants · MCQ
- Q33.If the sum of an infinite GP a, ar, ar2, ar3, ....... is 15 and the sum of the squares of its each term is 150, then the sum of ar2, ar4, ar6, ....... is :Mathematics · Sequences and Series · MCQ
- Q34.Let , . Then the value of …Mathematics · Complex Numbers · Numerical
- Q35.The sum of all integral values of k (k 0) for which the equation in x has no real roots, is .Mathematics · Quadratic Equation and Inequalities · Numerical
- Q36.If , then is equal to .Mathematics · Permutations and Combinations · Numerical
- Q37.A wire of length 36 m is cut into two pieces, one of the pieces is bent to form a square and the other is bent to form a circle. If the sum of the areas of the two figures is minimum, and the circumference of the circle is k (meter), then …Mathematics · Application of Derivatives · Numerical
- Q38.The area of the region is .Mathematics · Area Under the Curves · Numerical
- Q39.The locus of a point, which moves such that the sum of squares of its distances from the points (0, 0), (1, 0), (0, 1), (1, 1) is 18 units, is a circle of diameter d. Then d2 is equal to .Mathematics · Circle · Numerical
- Q40.If y = y(x) is an implicit function of x such that loge(x + y) = 4xy, then at x = 0 is equal to .Mathematics · Differentiation · Numerical
- Q41.The number of three-digit even numbers, formed by the digits 0, 1, 3, 4, 6, 7 if the repetition of digits is not allowed, is .Mathematics · Permutations and Combinations · Numerical
- Q42.Let a, b R, b 0, Define a function . If f is…Mathematics · Limits Continuity and Differentiability · Numerical
- Q43.The fractional change in the magnetic field intensity at a distance 'r' from centre on the axis of current carrying coil of radius 'a' to the magnetic field intensity at the centre of the same coil is : (Take r < a)Physics · Magnetics · MCQ
- Q44.The magnitude of vectors , and in the given figure are equal. The direction of + with x-axis will be : Includes diagramPhysics · Vector Algebra · MCQ
- Q45.Car B overtakes another car A at a relative speed of 40 ms 1. How fast will the image of car B appear to move in the mirror of focal length 10 cm fitted in car A, when the car B is 1.9 m away from the car A?Physics · Geometrical Optics · MCQ
- Q46.Inside a uniform spherical shell : (1) the gravitational field is zero (2) the gravitational potential is zero (3) the gravitational field is same everywhere (4) the gravitational potential is same everywhere (5) all of the above Choose…Physics · Gravitation · MCQ
- Q47.Two narrow bores of diameter 5.0 mm and 8.0 mm are joined together to form a U-shaped tube open at both ends. If this U-tube contains water, what is the difference in the level of two limbs of the tube. [Take surface tension of water T =…Physics · Properties of Matter · MCQ
- Q48.An electric appliance supplies 6000 J/min heat to the system. If the system delivers a power of 90W. How long it would take to increase the internal energy by 2.5 103 J ?Physics · Heat and Thermodynamics · MCQ
- Q49.An inductor coil stores 64 J of magnetic field energy and dissipates energy at the rate of 640 W when a current of 8A is passed through it. If this coil is joined across an ideal battery, find the time constant of the circuit in seconds :Physics · Electromagnetic Induction · MCQ
- Q50.A series LCR circuit driven by 300 V at a frequency of 50 Hz contains a resistance R = 3 k , an inductor of inductive reactance XL = 250 and an unknown capacitor. The value of capacitance to maximize the average power…Physics · Alternating Current · MCQ
- Q51.Identify the logic operation carried out by the given circuit :- Includes diagramPhysics · Electronic Devices · MCQ
- Q52.A particular hydrogen like ion emits radiation of frequency 2.92 1015 Hz when it makes transition from n = 3 to n = 1. The frequency in Hz of radiation emitted in transition from n = 2 to n = 1 will be :Physics · Atoms and Nuclei · MCQ
- Q53.In a photoelectric experiment ultraviolet light of wavelength 280 nm is used with lithium cathode having work function = 2.5 eV. If the wavelength of incident light is switched to 400 nm, find out the change in the stopping…Physics · Dual Nature of Radiation · MCQ
- Q54.In the given figure, the emf of the cell is 2.2 V and if internal resistance is 0.6 . Calculate the power dissipated in the whole circuit : Includes diagramPhysics · Current Electricity · MCQ
- Q55.A solid metal sphere of radius R having charge q is enclosed inside the concentric spherical shell of inner radius a and outer radius b as shown in the figure. The approximate variation electric field as a function of… Includes diagramPhysics · Electrostatics · MCQ
- Q56.The rms speeds of the molecules of Hydrogen, Oxygen and Carbon dioxide at the same temperature are VH, VO and VC respectively then :Physics · Heat and Thermodynamics · MCQ
- Q57.In a Screw Gauge, fifth division of the circular scale coincides with the reference line when the ratchet is closed. There are 50 divisions on the circular scale, and the main scale moves by 0.5 mm on a complete rotation. For a particular…Physics · Units and Measurements · MCQ
- Q58.What equal length of an iron wire and a copper-nickel alloy wire, each of 2 mm diameter connected parallel to give an equivalent resistance of 3 ? (Given resistivities of iron and copper-nickel alloy wire are 12 and 51 …Physics · Current Electricity · MCQ
- Q59.The initial mass of a rocket is 1000 kg. Calculate at what rate the fuel should be burnt so that the rocket is given an acceleration of 20 ms-2. The gases come out at a relative speed of 500 ms 1 with respect to the rocket : [Use g =…Physics · Laws of Motion · MCQ
- Q60.If E, L, M and G denote the quantities as energy, angular momentum, mass and constant of gravitation respectively, then the dimensions of P in the formula P = EL2M 5G 2 are :Physics · Units and Measurements · MCQ
- Q61.The material filled between the plates of a parallel plate capacitor has resistivity 200 m. The value of capacitance of the capacitor is 2 pF. If a potential difference of 40 V is applied across the plates of the capacitor, then…Physics · Capacitor · MCQ
- Q62.Statement I : By doping silicon semiconductor with pentavalent material, the electrons density increases. Statement II : The n-type semiconductor has net negative charge. In the light of the above statements, choose the most appropriate…Physics · Electronic Devices · MCQ
- Q63.A uniform chain of length 3 meter and mass 3 kg overhangs a smooth table with 2 meter lying on the table. If k is the kinetic energy of the chain in joule as it completely slips off the table, then the value of k is ................. .…Physics · Work Power and Energy · Numerical
- Q64.The electric field in a plane electromagnetic wave is given by …Physics · Electromagnetic Waves · Numerical
- Q65.Two spherical balls having equal masses with radius of 5 cm each are thrown upwards along the same vertical direction at an interval of 3s with the same initial velocity of 35 m/s, then these balls collide at a height of ............... m.…Physics · Motion in A Straight Line · Numerical
- Q66.A soap bubble of radius 3 cm is formed inside the another soap bubble of radius 6 cm. The radius of an equivalent soap bubble which has the same excess pressure as inside the smaller bubble with respect to the atmospheric pressure is…Physics · Properties of Matter · Numerical
- Q67.Two short magnetic dipoles m1 and m2 each having magnetic moment of 1 Am2 are placed at point O and P respectively. The distance between OP is 1 meter. The torque experienced by the magnetic dipole m2 due to the presence of m1 is… Includes diagramPhysics · Magnetics · Numerical
- Q68.Two travelling waves produces a standing wave represented by equation, y = 1.0 mm cos(1.57 cm 1) x sin(78.5 s 1)t. The node closest to the origin in the region x > 0 will be at x = .............. cm.Physics · Waves · Numerical
- Q69.White light is passed through a double slit and interference is observed on a screen 1.5 m away. The separation between the slits is 0.3 mm. The first violet and red fringes are formed 2.0 mm and 3.5 mm away from the central white fringes.…Physics · Wave Optics · Numerical
- Q70.Consider a badminton racket with length scales as shown in the figure. If the mass of the linear and circular portions of the badminton racket are same (M) and the mass of the threads are negligible, the moment of inertia of the racket… Includes diagramPhysics · Rotational Motion · Numerical