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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.

NEET 2021 Biology — 82 Questions

Prefer chapter-wise? Solve NEET Biology PYQs by chapter.

  1. 1Which or the following statements is incorrect?
  2. 2The production of gametes by the parents, the formation of zygotes, the F1 and F2 plants, can be understood using
  3. 3The production of gametes by the parents, formation of zygotes, the F1 and F2 plants can be understood from a diagram…
  4. 4Which of the following statements is incorrect?
  5. 5Which of the following statements is incorrect?
  6. 6Which of the following statements is incorrect?
  7. 7Which of the following statements is incorrect?
  8. 8Which out of the following statements is incorrect?
  9. 9Which of the following statements is incorrect?
  10. 10Which is the “Only enzyme” that has “Capability” to catalyse Initiation, Elongation and Termination in the process of…
  11. 11Complete the flow chart on central dogma. (a) ____ (b) ____ (c) ____ (d) ____ (The flow chart shows DNA, with a…
  12. 12If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it?
  13. 13Identify the correct statement. a. The coding strand in a transcription unit is copied to an mRNA b. Split gene…
  14. 14DNA fingerprinting involves identifying differences in some specific regions in DNA sequence, called as:
  15. 15Which of the following RNAs is not required for the synthesis of protein?
  16. 16When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as:
  17. 17The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G1…
  18. 18The centriole undergoes duplication during:
  19. 19Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature?
  20. 20Match List-I with List-II: List-I (a) S phase (b) G2 phase (c) Quiescent stage (d) G1 phase List-II (i) Proteins are…
  21. 21Which of the following algae produce Carrageen?
  22. 22Which of the following algae contains mannitol as reserve food material?
  23. 23Which of the following plants is monoecious?
  24. 24Gemmae are present in:
  25. 25Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as:
  26. 26With regard to insulin choose correct options. (a) C-peptide is not present in mature insulin. (b) The insulin produced…
  27. 27Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its…
  28. 28When gene targetting involving gene amplification is attempted in an individual's tissue to treat disease, it is known…
  29. 29The Adenosine deaminase deficiency results into:
  30. 30For effective treatment of the disease, early diagnosis and understanding its pathophysiology is very important. Which…
  31. 31Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction) ?
  32. 32Which of the following is not an application of PCR (Polymerase Chain Reaction)
  33. 33Plasmid pBR322 has PsI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is…
  34. 34A specific recognition sequence identified by endonucleases to make cuts at specific positions within the DNA is:
  35. 35Erythropoietin hormone which stimulates R.B.C. formation is produced by
  36. 36Persons with “AB” blood group are called as “Universal recipients”. This is due to:
  37. 37Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?
  38. 38Match List I with List II. List I (a) Scapula (b) Cranium (c) Sternum (d) Vertebral column List II (i) Cartilaginous…
  39. 39Chronic auto immune disorder affecting neuromuscular junction leading to fatigue, weakening and paralysis of skeletal…
  40. 40During the muscular contraction which of the following events occur? (a) 'H' zone disappears (b) 'A' band widens (c)…
  41. 41Which of the following statements wrongly represents the nature of smooth muscle?
  42. 42The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide. (CO2) at alveoli (the site of diffusion) are:
  43. 43Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.
  44. 44Match list I with list II. List I: (a) Protein; (b) Unsaturated fatty acid; (c) Nucleic acid; (d) Polysaccharide List…
  45. 45Following are the statements with reference to 'lipids'. (a) Lipids having only single bonds are called unsaturated…
  46. 46Identify the incorrect pair.
  47. 47Which of the following are not secondary metabolites in plants?
  48. 48Persons with “AB” blood group are called as “Universal recipients”. This is due to:
  49. 49In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny…
  50. 50In the equation GPP - R = NPP R represents
  51. 51The amount of nutrients such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is…
  52. 52Amensalism can be represented as :
  53. 53Inspite of interspecific competition in nature, which mechanism the competing species might have evolved for their…
  54. 54In the exponential growth equation Nt = N0e^rt, e represents:
  55. 55The first stable product of CO2 fixation in sorghum is:
  56. 56Match List-I with List-II: List I (a) Cristae (b) Thylakoid (c) Centromere (d) Cisternae List II (i) Primary…
  57. 57The organelles that are included in the endomembrane system are
  58. 58The plant hormone used to destroy weeds in a field is
  59. 59Plants follow different pathways in response to environment or phases of life to form different kinds of structures.…
  60. 60Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its…
  61. 61Chronic auto immune disorder affecting neuromuscular junction leading to fatigue, weakening and paralysis of skeletal…
  62. 62Match list I with list II. List I (a) Filariasis (b) Amoebiasis (c) Pneumonia (d) Ringworm List II (i) Haemophilus…
  63. 63Which of the following secretes the hormone, relaxin, during the later phase of pregnancy? (NEET 2021)
  64. 64Receptors for sperm binding in mammals are present on
  65. 65Which of these is not an important component of initiation of parturition in humans? (NEET 2021)
  66. 66The factor that leads to Founder effect in a population is:
  67. 67Match list I with list II. List I | List II (a) Adaptive radiation | (i) Selection of resistant varieties due to…
  68. 68A typical angiosperm embryo sac at maturity is
  69. 69In some members of which of the following pairs of families, pollen grains retain their viability for months after…
  70. 70The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during…
  71. 71Match List I with List II. List I (a) Metamerism (b) Canal system (c) Comb plates (d) Cnidoblasts List II (i)…
  72. 72Read the following statements. Statements: (a) Metagenesis is observed in Helminths. (b) Echinoderms are triploblastic…
  73. 73Which one of the following is an example of Hormone releasing IUD? (NEET 2021)
  74. 74Match list I with list II. List I (a) Vaults (b) IUDs (c) Vasectomy (d) Tubectomy List II (i) Entry of sperm through…
  75. 75Which of the following statements wrongly represents the nature of smooth muscle? (a) Communication among the cells is…
  76. 76Identify the types of cell junctions that help to stop the leakage of the substances across a tissue and facilitation…
  77. 77Match the floral formulae in List I with the families in List II. List I (Floral formula) (a) % ⚥ K(5) C1+2+(2) A(9)+1…
  78. 78Diadelphous stamens are found in:
  79. 79Which of the following secretes the hormone, relaxin, during the later phase of pregnancy?
  80. 80Erythropoietin hormone which stimulates R.B.C. formation is produced by
  81. 81Match List-I with List-II. List-I: (a) Cells with active cell division capacity (b) Tissue having all cells similar in…
  82. 82Match list I with list II. List I (Microorganism) — List II (Product): (a) Aspergillus niger (b) Acetobacter aceti (c)…
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