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NEET 2021 Physics & Chemistry PYQ — Questions with Answers & Solutions

All 96 NEET 2021 Physics & Chemistry previous year questions, each with the correct answer and a step-by-step solution. Free — tap any question to solve it.

NEET 2021 Physics — 53 Questions

  1. 1A parallel plate capacitor has a uniform electric field 'E' in the space between the plates. If the distance between…
  2. 2Two charged spherical conductors of radius R1 and R2 are connected by a wire. Then the ratio of surface charge…
  3. 3A dipole is placed in an electric field as shown. In which direction will it move?
  4. 4Twenty seven drops of same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential…
  5. 5Polar molecules are the molecules:
  6. 6The equivalent capacitance of the combination shown in the figure is:
  7. 7The effective resistance of four identical wires in parallel is 0.25 . Their effective resistance in series is:
  8. 8In a potentiometer, a cell of emf 1.5 V balances at 36 cm. If a 2.5 V cell replaces it, the balance length is:
  9. 9Three resistors r1, r2, r3 are connected as shown. The ratio i3/i1 of currents in terms of the resistances is:
  10. 10The electron concentration in an n-type semiconductor equals the hole concentration in a p-type. An electric field is…
  11. 11Match Column-I with Column-II: Column-I (A) Drift velocity (B) Electrical resistivity (C) Relaxation period (D) Current…
  12. 12In the product F = q(v × B) = q(v_x î + v_y ĵ + v_z k̂) × (B_x î + B_y ĵ + B_z k̂), for q = 1 and v = 2î + 4ĵ + 6k̂ and…
  13. 13A thick current cable of radius R carries current 'I' uniformly distributed across its cross-section. The variation of…
  14. 14An infinitely long straight conductor carries a current of 5 A as shown. An electron is moving with a speed of 10⁵ m/s…
  15. 15A uniform conducting wire of length 12a and resistance 'R' is wound up as a current carrying coil in the shape of (i)…
  16. 16A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since
  17. 17A convex lens 'A' of focal length 20 cm and a concave lens 'B' of focal length 5 cm are kept along the same axis with a…
  18. 18Find the value of the angle of emergence from the prism shown in the figure. The refractive index of the glass is √3…
  19. 19A point object is placed at a distance of 60 cm from a convex lens of focal length 30 cm. If a plane mirror were put…
  20. 20For the given circuit, the input digital signals are applied at the terminals A, B and C. What would be the output…
  21. 21Consider the following Statements (A) and (B) and identify the correct answer. A. A zener diode is connected in reverse…
  22. 22The electron concentration in an n-type semiconductor is the same as the hole concentration in a p-type semiconductor.…
  23. 23Two charged spherical conductors of radii R₁ and R₂ are connected by a wire. Then the ratio of the surface charge…
  24. 24Polar molecules are the molecules:
  25. 25A dipole is placed in a non-uniform electric field as shown. In which direction will it move?
  26. 26In the product F=q, v× B, for q=1, v=2 i+4 j+6 k and F=4 i-20 j+12 k, the complete expression for B is:
  27. 27A car starts from rest and accelerates at 5 m/s^2. At t=4 s a ball is dropped out of a window by a person sitting in…
  28. 28A particle moving in a circle of radius R with uniform speed takes a time T to complete one revolution. If this…
  29. 29A screw gauge gives the following readings when used to measure the diameter of a wire: Main scale reading: 0 mm…
  30. 30If force [F], acceleration [A] and time [T] are chosen as the fundamental physical quantities, find the dimensions of…
  31. 31If E and G respectively denote energy and gravitational constant, then E/G has the dimensions of:
  32. 32A series LCR circuit containing 5.0 H inductor, 80 μF capacitor and 40 Ω resistor is connected to 230 V variable…
  33. 33An inductor of inductance L, a capacitor of capacitance C and a resistor of resistance 'R' are connected in series to…
  34. 34A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power…
  35. 35The escape velocity from the earth's surface is v. The escape velocity from the surface of another planet of radius…
  36. 36A particle is released from rest at height S above the earth's surface. At a certain height its kinetic energy is three…
  37. 37A particle of mass m is projected with velocity u = k·vₑ (k < 1) from the earth's surface (vₑ = escape velocity). The…
  38. 38From a circular ring of mass M and radius R, an arc corresponding to a 90° sector is removed. The moment of inertia of…
  39. 39A uniform rod (200 cm, 500 g) is balanced on a wedge at the 40 cm mark. A 2 kg mass hangs at the 20 cm mark and an…
  40. 40Water falls from a height of 60 m at the rate of 15 kg/s to operate a turbine. The losses due to frictional force are…
  41. 41A particle is released from height S from the surface of the Earth. At a certain height its kinetic energy is three…
  42. 42A capacitor of capacitance C is connected across an ac source of voltage V given by V = V₀ sin ωt. The displacement…
  43. 43For a plane electromagnetic wave propagating in the +x-direction, which one of the following combinations gives a…
  44. 44A body executes simple harmonic motion with frequency n. The frequency of variation of its potential energy is
  45. 45A spring is stretched by 5 cm under a force of 10 N. The time period of oscillation when a mass of 2 kg is suspended…
  46. 46The number of photons per second on an average emitted by the source of monochromatic light of wavelength 600 nm, when…
  47. 47An electromagnetic wave of wavelength λ is incident on a photosensitive surface of negligible work function. If a…
  48. 48A small block slides down from the top of a smooth inclined plane starting from rest at t = 0. If S_n is the distance…
  49. 49A ball of mass 0.15 kg is dropped from a height of 10 m, strikes the ground and rebounds to the same height. The…
  50. 50Match Column-I with Column-II and choose the correct match from the given choices: Column-I (A) Root mean square speed…
  51. 51A cup of coffee cools from 90 °C to 80 °C in t minutes when the room temperature is 20 °C. The time taken by a similar…
  52. 52The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine, becomes…
  53. 53Two conducting circular loops of radii R1 and R2 are placed in the same plane with their centres coinciding. If R1 >>…

NEET 2021 Chemistry — 43 Questions

  1. 1BF3 is planar and an electron-deficient compound. The hybridization and number of electrons around the central atom…
  2. 2Match List-I with List-II. List-I: (a) PCl5, (b) SF6, (c) BrF5, (d) BF3 List-II: (i) Square pyramidal, (ii) Trigonal…
  3. 3The correct sequence of bond enthalpy of the C-X bond is:
  4. 4Statement I: Acid strength increases in the order HF < HCl < HBr < HI. Statement II: As the size of the elements F, Cl…
  5. 5Which of the following molecules is non-polar in nature?
  6. 6What is the IUPAC name of the organic compound formed in the following reaction? CH3COCH3 ->[(i) C2H5MgBr, dry…
  7. 7The intermediate compound X in the following reaction is: C6H5-CH3 ->[CrO2Cl2][CS2] X ->[H3O+] C6H5-CHO
  8. 8Match List-I with List-II and choose the correct answer. List-I: (a) C6H6 ->[CO, HCl][Anhy. AlCl3, CuCl] C6H5-CHO (b)…
  9. 9The product formed in the following reaction is: 4-methyl-2-(2-methoxy-2-oxoethyl)cyclohexan-1-one ->[NaBH4][C2H5OH] ?…
  10. 10Consider the reaction: CH3CH2COONa ->[NaOH + ?][ ] CH3CH3 + Na2CO3 Identify the missing reagent.
  11. 11The compound which shows metamerism is:
  12. 12An organic compound contains 78% (by wt.) carbon and the remaining percentage of hydrogen. The empirical formula of…
  13. 13Choose the correct skeletal structure for 2,6-dimethyldec-4-ene.
  14. 14What is the IUPAC name of the organic compound formed in the following reaction? CH3-CO-CH3 ->[(i) C2H5MgBr, dry…
  15. 15The dihedral angle of the least stable conformer of ethane is:
  16. 16Which of the following is the correct structure of 2,6-dimethyldec-4-ene?
  17. 17The dihedral angle of the least stable conformer of ethane is:
  18. 18The major product of the following reaction is: (CH3)2CH-CH=CH2 ->[HBr][(C6H5CO)2O2] ?
  19. 19Identify the missing reagent/chemical in the reaction: CH3CH2COONa ->[NaOH, ?][ ] CH3CH3 + Na2CO3
  20. 20A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1368 kHz (kilohertz). The wavelength…
  21. 21Tritium, a radioactive isotope of hydrogen, emits which of the following particles?
  22. 22From the following pairs of ions, which one is NOT an iso-electronic pair?
  23. 23Deficiency of red blood cells (pernicious anaemia) is the deficiency disease of
  24. 24For a reaction A -> B, the enthalpy of reaction is -4.2 kJ,mol-1 and the enthalpy of activation is 9.6 kJ,mol-1. The…
  25. 25For the irreversible expansion of an ideal gas under isothermal conditions, the correct option is:
  26. 26Zr (Z=40) and Hf (Z=72) have similar atomic and ionic radii because of:
  27. 27From the following pairs of ions, which one is NOT an isoelectronic pair?
  28. 28The following solutions were prepared by dissolving 10 g glucose (C6H12O6) in 250 mL of water (P1), 10 g of urea…
  29. 29The correct option for the value of vapour pressure of a solution at 45 °C with benzene to octane in molar ratio 3 : 2…
  30. 30The major product of the following reaction is: (CH3)2CH-CH=CH2 + HBr ->[(C6H5CO)2O2] ?
  31. 31The major product formed in the dehydrohalogenation of 2-bromopentane is pent-2-ene. This product formation is based on:
  32. 32The compound which shows metamerism is
  33. 33What is the IUPAC name of the organic compound formed in the following chemical reaction? CH3COCH3 ->[(i) C2H5MgBr, dry…
  34. 34Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of:
  35. 35The incorrect statement among the following is:
  36. 36The molar conductances of NaCl, HCl and CH3COONa at infinite dilution are 126.45, 426.16 and 91.0 S cm^2,mol-1…
  37. 37The molar conductivity of 0.007 M acetic acid is 20 S cm^2,mol-1. What is the dissociation constant of acetic acid?…
  38. 38Ethylenediaminetetraacetate (EDTA) ion is:
  39. 39Match List - I with List - II. List-I (a) [Fe(CN)6]^3- (b) [Fe(H2O)6]^3+ (c) [Fe(CN)6]^4- (d) [Fe(H2O)6]^2+ List-II (i)…
  40. 40Which of the following reactions is a metal displacement reaction? Choose the right option.
  41. 41An organic compound contains 78% (by wt.) carbon and the remaining percentage of hydrogen. The empirical formula of the…
  42. 42The slope of the Arrhenius plot ( k vs 1/T) of a first-order reaction is -5× 103 K. The value of E_a of the reaction is…
  43. 43Identify the compound that will react with Hinsberg's reagent to give a solid which dissolves in alkali.
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