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NEET 2020 Physics & Chemistry PYQ — Questions with Answers & Solutions

All 67 NEET 2020 Physics & Chemistry previous year questions, each with the correct answer and a step-by-step solution. Free — tap any question to solve it.

NEET 2020 Physics — 31 Questions

  1. 1A charged particle having drift velocity 7.5×10-4 m s-1 in an electric field of 3×10-10 V m-1 has a mobility (in m2 V-1…
  2. 2A resistance wire in the left gap of a metre bridge balances a 10 resistance in the right gap at a point dividing the…
  3. 3The colour code of a resistance is given (Yellow, Violet, Brown, Gold). The values of resistance and tolerance…
  4. 4The solids which have the negative temperature coefficient of resistance are:
  5. 5Which of the following graphs represents the variation of resistivity ( ) with temperature (T) for copper?
  6. 6A screw gauge has least count of 0.01 mm and there are 50 divisions in its circular scale. The pitch of the screw gauge…
  7. 7Taking into account the significant figures, what is the value of 9.99 m - 0.0099 m?
  8. 8Dimensions of stress are:
  9. 9The capacitance of a parallel plate capacitor with air as medium is 6 microF. With the introduction of a dielectric…
  10. 10A short electric dipole has a dipole moment of 16 × 10⁻⁹ Cm. The electric potential due to the dipole at a point at a…
  11. 11The solids which have the negative temperature coefficient of resistance are:
  12. 12The increase in the width of the depletion region in a p-n junction diode is due to:
  13. 13The torque about the origin when a force 3ĵ N acts on a particle whose position vector is 2k̂ m is:
  14. 14Two particles of mass 5 kg and 10 kg are attached to the ends of a rigid massless rod of length 1 m. The distance of…
  15. 15Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has…
  16. 16The Brewster's angle i_B for an interface should be
  17. 17Light with an average flux of 20 W/cm² falls on a non-reflecting surface at normal incidence having surface area 20…
  18. 18The ratio of contributions made by the electric field and magnetic field components to the intensity of an…
  19. 19A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference…
  20. 20A 40 μF capacitor is connected to a 200 V, 50 Hz ac supply. The rms value of the current in the circuit is, nearly:
  21. 21An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the…
  22. 22Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the…
  23. 23A ball is thrown vertically downward with a velocity of 20 m/s from the top of a tower. It hits the ground after some…
  24. 24A long solenoid of 50 cm length having 100 turns carries a current 2.5 A. The magnetic field at the centre of the…
  25. 25The average thermal energy for a mono-atomic gas is: (k_B is the Boltzmann constant and T the absolute temperature)
  26. 26Dimensions of stress are:
  27. 27A ray is incident at an angle of incidence i on one surface of a small angle prism (with angle of prism A) and emerges…
  28. 28An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A m⁻¹. The permeability of the material…
  29. 29The phase difference between displacement and acceleration of a particle in simple harmonic motion is
  30. 30The quantities of heat required to raise the temperature of two solid copper spheres of radii r₁ and r₂ (r₁ = 1.5 r₂)…
  31. 31In a guitar, two strings A and B of the same material are slightly out of tune and produce beats of frequency 6 Hz.…

NEET 2020 Chemistry — 36 Questions

  1. 1Identify the incorrect statement.
  2. 2Reaction between acetone and methylmagnesium chloride, followed by hydrolysis, will give:
  3. 3The elimination reaction of 2-bromopentane to form pent-2-ene is: (a) a -elimination reaction (b) follows Zaitsev…
  4. 4What is the change in oxidation number of carbon in the following reaction? CH4(g) + 4Cl2(g) -> CCl4(l) + 4HCl(g)
  5. 5Which of the following alkanes cannot be made in good yield by the Wurtz reaction?
  6. 6Which of the following is the correct order of increasing field strength of ligand to form coordination compound?
  7. 7Urea reacts with water to form A, which decomposes to form B. B, when passed through Cu^2+ (aq), gives a deep-blue…
  8. 8The reaction between benzaldehyde and acetophenone in the presence of dilute NaOH is known as:
  9. 9The reaction between acetone (CH3COCH3) and methylmagnesium chloride (CH3MgCl) followed by hydrolysis gives
  10. 10Identify compound X in the following reaction: C6H5-CH3 ->[Cl2][h ] X ->[H2O][373 K] C6H5-CHO
  11. 11Which of the following is a basic amino acid?
  12. 12Sucrose on hydrolysis gives:
  13. 13The correct option for free expansion of an ideal gas under adiabatic condition is:
  14. 14Hydrolysis of sucrose is given by the following reaction: Sucrose + H2O <=> Glucose + Fructose. If the equilibrium…
  15. 15For the reaction 2Cl(g) -> Cl2(g), the correct option is:
  16. 16Identify a molecule which does not exist.
  17. 17Which of the following set of molecules will have zero dipole moment?
  18. 18A tertiary butyl carbocation is more stable than the secondary butyl carbocation because of which one of the following?
  19. 19Paper chromatography is an example of
  20. 20For the elimination reaction of 2-bromopentane to form pent-2-ene, consider the following statements: (a) It is a…
  21. 21Match the following oxides with their nature. Column-I (Oxide) (a) CO (b) BaO (c) Al2O3 (d) Cl2O7 Column-II (Nature)…
  22. 22Match the following IUPAC provisional names with their IUPAC official names. Column-I (Name) (a) Unnilunium (b)…
  23. 23Which of the following alkane cannot be made in good yield by Wurtz reaction?
  24. 24An alkene on ozonolysis gives methanal (HCHO) as one of the products. Its structure is:
  25. 25The mixture which shows positive deviation from Raoult's law is:
  26. 26The freezing point depression constant (K_f) of benzene is 5.12 K kg mol⁻¹. The freezing point depression for the…
  27. 27Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give
  28. 28Anisole on cleavage with HI gives
  29. 29On electrolysis of dil. sulphuric acid using platinum (Pt) electrodes, the product obtained at the anode will be:
  30. 30The number of Faradays (F) required to produce 20 g of calcium from molten CaCl2 (Atomic mass of Ca = 40 g mol-1) is:
  31. 31The rate constant for a first order reaction is 4.606 10-3 s-1. The time required to reduce 2.0 g of the reactant to…
  32. 32An increase in the concentration of the reactants of a reaction leads to change in:
  33. 33The number of protons, neutrons and electrons in 17571Lu, respectively, are:
  34. 34What is the change in oxidation number of carbon in the following reaction? CH4(g) + 4Cl2(g) -> CCl4(l) + 4HCl(g)
  35. 35Which one of the following has the maximum number of atoms?
  36. 36Which of the following amines will give the carbylamine test?

NEET 2020 Biology — 81 Questions

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

  1. 1Select the correct statement.
  2. 2Select the correct statement:
  3. 3Select the correct match.
  4. 4In gel electrophoresis, separated DNA fragments can be visualized with the help of
  5. 5Identify the wrong statement with regard to Restriction Enzymes.
  6. 6Choose the correct pair from the following:
  7. 7The specific palindromic sequence which is recognized by EcoRI is
  8. 8Match the organism with its use in biotechnology (a) Bacillus (b) Thermus aquaticus (c) Agrobacterium tumefaciens (d)…
  9. 9The sequence that controls the copy number of the linked DNA in the vector is termed
  10. 10Embryological support for evolution was disapproved by
  11. 11Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment…
  12. 12From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask:
  13. 13Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G0). This…
  14. 14Identify the correct statement with regard to G1 phase (Gap 1) of interphase.
  15. 15Match the following with respect to meiosis: Column-I a. Zygotene b. Pachytene c. Diplotene d. Diakinesis Column-II (i)…
  16. 16Which one of the following is the most abundant protein in the animals?
  17. 17Identify the substances having glycosidic bond and peptide bond, respectively in their structure:
  18. 18Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their:
  19. 19Match the following: (a) Inhibitor of catalytic activity (b) Possess peptide bonds (c) Cell wall material in fungi (d)…
  20. 20Identify the basic amino acid from the following
  21. 21Which of the following pairs is of unicellular algae?
  22. 22Strobili or cones are found in:
  23. 23Which of the following statements are true for the phylum Chordata? Statements: (a) In Urochordata notochord extends…
  24. 24Bilaterally symmetrical and acoelomate animals are exemplified by
  25. 25Match the following columns and select the correct option. Column-I (a) 6-15 pairs of gill slits (b) Heterocercal…
  26. 26Match the following columns and select the correct option. Column-I (a) Gregarious, polyphagous pest (b) Adult with…
  27. 27Presence of which of the following conditions in urine are indicative of diabetes mellitus?
  28. 28Which of the following would help in prevention of diuresis?
  29. 29Cuboidal epithelium with brush border of microvilli is found in:
  30. 30Name the plant growth regulator which upon spraying on sugarcane crop increases the length of stem, thus increasing the…
  31. 31The process of growth is maximum during
  32. 32Which of the following is not an inhibitory substance governing seed dormancy?
  33. 33How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with…
  34. 34Experimental verification of the chromosomal theory of inheritance was done by
  35. 35Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups.
  36. 36If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix…
  37. 37Which of the following statements is correct? a. Adenine pairs with thymine through three H-bonds b. Adenine does not…
  38. 38The first phase of translation is:
  39. 39Name the enzyme that facilitates opening of DNA helix during transcription.
  40. 40Match the trophic levels (grassland ecosystem) in Column I with the correct species in Column II: Column I (a) First…
  41. 41In relation to gross primary productivity and Net primary productivity of an ecosystem, which one of the following…
  42. 42Which of the following statements about inclusion bodies is not correct?
  43. 43Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?
  44. 44Identify the wrong statement with reference to immunity.
  45. 45The infectious stage of Plasmodium that enters the human body is:
  46. 46Match the following diseases with the causative organism and select the correct option. Column-I (a) Typhoid (b)…
  47. 47Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups.
  48. 48The QRS complex in a standard ECG represents:
  49. 49Match the following columns (types of WBC with their functions) and select the correct option. List I (WBC) A.…
  50. 50Meiotic division of the secondary oocyte is completed:
  51. 51Match the following columns and select the correct option. Column-I (a) Placenta (b) Zona pellucida (c) Bulbourethral…
  52. 52Which of the following hormone levels will cause release of ovum (ovulation) from the graafian follicle? (NEET 2020)
  53. 53Ray florets have
  54. 54The ovary is half inferior in:
  55. 55The roots that originate from the base of the stem are:
  56. 56Identify the wrong statement with reference to transport of oxygen.
  57. 57Select the correct events that occur during inspiration. (a) Contraction of diaphragm (b) Contraction of external…
  58. 58Bt cotton variety that was developed by the introduction toxin gene of Bacillus thuringiensis (bt) is resistant to:
  59. 59Match the following columns and select the correct option. Column-I (a) Bt cotton (b) Adenosine deaminase deficiency…
  60. 60Presence of which of the following conditions in urine are indicative of diabetes mellitus?
  61. 61Which of the following would help in prevention of diuresis?
  62. 62Match the following columns and select the correct option. Column-I (a) Pituitary gland (b) Thyroid gland (c) Adrenal…
  63. 63In water hyacinth and water lily, pollination takes place by: (NEET 2020)
  64. 64The body of the ovule is fused within the funicle at
  65. 65The plant parts which consist of two generations one within the other: (a) Pollen grains inside the anther (b)…
  66. 66In light reaction, plastoquinone facilitates the transfer of electrons from
  67. 67The oxygenation activity of RuBisco enzyme is photorespiration leads to the formations of:
  68. 68Which of the following is put into Anaerobic sludge digester for further sewage treatment?
  69. 69Match the following columns and select the correct option: Column-I (a) Clostridium butylicum (b) Trichoderma…
  70. 70In which of the following techniques, the embryo are transferred to assist those females who cannot conceive?
  71. 71Select the option including all sexually transmitted diseases. (NEET 2020)
  72. 72Cuboidal epithelium with brush border of microvilli is found in:
  73. 73Goblet cells of alimentary canal are modified from:
  74. 74Which of the following regions of the globe is exhibits highest species diversity?
  75. 75According to Robert May, the global species diversity is about (NEET 2020)
  76. 76Which of the following is correct about viroids?
  77. 77According to Robert May, the global species diversity is about: (NEET-2020)
  78. 78Which of the following is not an attribute of a population?
  79. 79The transverse section of a plant shows following anatomical features: Features: (a) Large number of scattered vascular…
  80. 80Match the following columns and select the correct option. Column I (a) Floating Ribs (b) Acromion (c) Scapula (d)…
  81. 81The number of substrate level phosphorylations in one turn of citric acid cycle is:
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