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NEET 2018 Physics & Chemistry PYQ — Questions with Answers & Solutions

All 96 NEET 2018 Physics & Chemistry previous year questions, each with the correct answer and a step-by-step solution. Free — tap any question to solve it.

NEET 2018 Physics — 46 Questions

  1. 1An inductor 20 mH, a capacitor 50 μF and a resistor 40 Ω are connected in series across a source of emf V = 10 sin 340…
  2. 2An inductor 20 mH, a capacitor 100 μF and a resistor 50 Ω are connected in series across a source of emf, V = 10 sin…
  3. 3A moving block of mass m collides with a stationary block of mass 4m. The lighter block comes to rest after the…
  4. 4A block of mass m is placed on a smooth inclined wedge ABC of inclination θ. The wedge is given a horizontal…
  5. 5A body, initially at rest, slides down a frictionless track from a height h (as shown) and just completes a vertical…
  6. 6Which one of the following statements is incorrect?
  7. 7The moment of the force F = 4î + 5ĵ + 6k̂ acting at the point (2, 0, -3), about the point (2, -2, -2), is:
  8. 8A solid sphere rotates freely about its symmetry axis in free space. Its radius is increased keeping the mass constant.…
  9. 9Three bodies A (solid sphere), B (disc), C (ring), each of mass M and radius R, spin about their symmetry axes with the…
  10. 10The refractive index of the material of a prism is √2 and the angle of the prism is 30°. One of the two refracting…
  11. 11An astronomical refracting telescope will have large angular magnification and high angular resolution when it has an…
  12. 12An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced…
  13. 13A carbon resistor of (47 ± 4.7) k is to be marked with rings of different colours for its identification. The colour…
  14. 14A set of 'n' equal resistors (R each) in series with a battery (emf E, internal resistance R) draws current I. In…
  15. 15A battery of n identical cells (each internal resistance r) in series is short-circuited and the current I measured.…
  16. 16The volume (V) of a monatomic gas varies with its temperature (T), as shown in the graph (a straight line through the…
  17. 17The efficiency of an ideal heat engine working between the freezing point and boiling point of water is
  18. 180.1 g of water at 100,^°C and normal pressure (1.013× 105 N/m^2) requires 54 cal to convert into steam at 100,^°C. If…
  19. 19In a p-n junction diode, change in temperature due to heating:
  20. 20In the combination of the following gates, the output Y can be written in terms of inputs A and B as:
  21. 21Unpolarised light is incident from air on a plane surface of a material of refractive index μ. At a particular angle of…
  22. 22In Young's double slit experiment the separation d between the slits is 2 mm, the wavelength λ of the light used is…
  23. 23A body initially at rest, sliding along a frictionless track from a height h, just completes a vertical circle of…
  24. 24A moving block of mass m collides with another stationary block of mass 4m. The lighter block comes to rest after the…
  25. 25A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale…
  26. 26Which one of the following statements is incorrect?
  27. 27A metallic rod of mass per unit length 0.5 kg m⁻¹ is lying horizontally on a smooth inclined plane which makes an angle…
  28. 28Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit…
  29. 29The fundamental frequency of an open organ pipe equals the third harmonic of a closed organ pipe. If the length of the…
  30. 30A tuning fork produces resonance in a glass tube whose air-column length is varied by a piston. At 27 °C, two…
  31. 31When the light of frequency 2ν₀ (where ν₀ is the threshold frequency) is incident on a metal plate, the maximum…
  32. 32An electron of mass m with an initial velocity v = v₀ î (v₀ > 0) enters an electric field E = −E₀ î (E₀ = constant > 0)…
  33. 33If the mass of the Sun were ten times smaller and the universal gravitational constant G ten times larger, which…
  34. 34The kinetic energies of a planet in an elliptical orbit about the Sun at positions A, B and C are K_A, K_B and K_C. AC…
  35. 35The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area…
  36. 36A toy car with charge q moves on a frictionless horizontal plane surface under the influence of a uniform electric…
  37. 37The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom is:
  38. 38The moment of the force F=4 i+5 j+6 k acting at the point (2,0,-3), about the point (2,-2,-2), is given by:
  39. 39An EM wave is propagating in a medium with velocity V = V î (along +x). The instantaneous oscillating electric field of…
  40. 40At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the Earth's…
  41. 41Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the…
  42. 42A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current is switched on, the…
  43. 43A pendulum hung from the roof of a tall building moves freely to and fro as a simple harmonic oscillator. The…
  44. 44The power radiated by a black body is P and it radiates maximum energy at wavelength λ₀. If the temperature is changed…
  45. 45A small sphere of radius 'r' falls from rest in a viscous liquid. As a result, heat is produced due to the viscous…
  46. 46The magnetic potential energy stored in a certain inductor is 25 mJ, when the current in the inductor is 60 mA. This…

NEET 2018 Chemistry — 50 Questions

  1. 1Which one is the wrong statement?
  2. 2Which one is a wrong statement?
  3. 3The correct order of N-compounds in its decreasing order of oxidation states is
  4. 4Which one of the following elements is unable to form MF6^3- ion?
  5. 5The correct order of atomic radii in group 13 elements is
  6. 6Which of the following oxides is most acidic in nature?
  7. 7Among CaH2, BeH2, BaH2, the order of ionic character is
  8. 8Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is…
  9. 9Which one of the following elements is unable to form MF6^3- ion?
  10. 10In the structure of ClF3, the number of lone pairs of electrons on the central atom Cl is:
  11. 11Which of the following molecules represents the order of hybridisation sp^2, sp^2, sp, sp from left to right atoms?
  12. 12Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass.…
  13. 13Consider the following species: CN^+, CN^-, NO and CN. Which of these will have the highest bond order?
  14. 14Identify the major products P, Q and R in the following sequence of reactions: C6H6 + CH3CH2CH2Cl ->[anhydrous AlCl3] P…
  15. 15A mixture of 2.3 g formic acid (HCOOH) and 4.5 g oxalic acid ((COOH)2) is treated with conc. H2SO4. The evolved gaseous…
  16. 16Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It…
  17. 17Compound A, C8H10O, reacts with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with…
  18. 18Identify the major products P, Q and R in the following sequence of reactions: C6H6 + CH3CH2CH2Cl ->[anhyd. AlCl3] P P…
  19. 19The compound A on treatment with Na gives B, and with PCl5 gives C. B and C react together to give diethyl ether. A, B…
  20. 20In the reaction C6H5OH + CHCl3 + NaOH -> salicylaldehyde the electrophile involved is
  21. 21Compound A, C8H10O, reacts with NaOI (produced by reacting Y with NaOH) to yield a yellow precipitate with a…
  22. 22Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the…
  23. 23Iron carbonyl, Fe(CO)5, is:
  24. 24The type of isomerism shown by the complex [CoCl2(en)2] is:
  25. 25The geometry and magnetic behaviour of the complex [Ni(CO)4] are:
  26. 26In which of the following molecules is the order of hybridisation sp^2, sp^2, sp, sp for the carbon atoms from left to…
  27. 27Which of the following carbocations is expected to be the most stable? (Each is a cyclohexadienyl-type cation bearing…
  28. 28Which of the following is correct with respect to the -I effect of the substituents? (R = alkyl)
  29. 29In the Reimer-Tiemann reaction, C6H5-O^- Na^+ + CHCl3 + NaOH -> salicylaldehyde (o-hydroxybenzaldehyde), the…
  30. 30The correct order of N-compounds in their decreasing order of oxidation states is
  31. 31Consider the change in oxidation state of bromine corresponding to different E^° values as shown in the Latimer diagram…
  32. 32For the redox reaction MnO4^- + C2O4^2- + H^+ -> Mn^2+ + CO2 + H2O, the correct coefficients of the reactants for the…
  33. 33The compound C7H8 (toluene) undergoes the following reactions: C7H8 ->[3Cl2, ] A ->[Br2/Fe] B ->[Zn/HCl] C The product…
  34. 34Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which, by Wurtz reaction, is converted to…
  35. 35Which of the following molecules represents the order of hybridisation sp^2, sp^2, sp, sp from left to right atoms?
  36. 36The compound A on treatment with Na gives B, and with PCl5 gives C. B and C react together to give diethyl ether. A, B…
  37. 37The compound C7H8 undergoes the following reactions: C7H8 ->[Cl2] A ->[Br2/Fe] B ->[Zn/HCl] C The product C is:
  38. 38Hydrocarbon A reacts with bromine by substitution to form an alkyl bromide, which by the Wurtz reaction is converted to…
  39. 39Magnesium reacts with an element X to form an ionic compound. If the ground-state electronic configuration of X is…
  40. 40Which of the following compounds can form a zwitterion?
  41. 41The difference between amylose and amylopectin is:
  42. 42A mixture of 2.3 g formic acid (HCOOH) and 4.5 g oxalic acid ((COOH)2) is treated with conc. H2SO4. The evolved gaseous…
  43. 43In which of the following is the number of water molecules maximum?
  44. 44Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the…
  45. 45Which one of the following ions exhibits d-d transition and paramagnetism as well?
  46. 46Which one of the following statements correctly describes the difference between a first-order and a second-order…
  47. 47When the initial concentration of the reactant is doubled, the half-life period of a zero order reaction
  48. 48The bond dissociation energies of X2, Y2 and XY are in the ratio of 1 : 0.5 : 1. H for the formation of XY is -200…
  49. 49Consider the change in oxidation state of bromine corresponding to the standard reduction (electrode) potentials shown…
  50. 50Nitration of aniline in strong acidic medium also gives m-nitroaniline because

NEET 2018 Biology — 81 Questions

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

  1. 1Select the wrong statement :
  2. 2Select the wrong statement
  3. 3Select the wrong statement.
  4. 4Select the wrong statement
  5. 5Which of the following is not a prokaryote?
  6. 6Which among the following is not a prokaryote?
  7. 7Which of the following organisms are known as chief producers in the oceans?
  8. 8Ciliates differ from all other protozoans in
  9. 9After karyogamy followed by meiosis, spores are produced exogenously in
  10. 10Which of the following events does not occur in rough endoplasmic reticulum?
  11. 11Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings…
  12. 12Which of the following is true for nucleolus?
  13. 13Which among the following is not a prokaryote?
  14. 14The Golgi complex participates in
  15. 15Natality refers to
  16. 16Niche is
  17. 17Which one of the following population interactions is widely used in medical science for the production of antibiotics?…
  18. 18In a growing population of a country,
  19. 19Which one of the following plants shows a very close relationship with a species of moth, where none of the two can…
  20. 20Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings…
  21. 21AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed…
  22. 22The experimental proof for semiconservative replication of DNA was first shown in a
  23. 23Select the correct match. a. Matthew Meselson and F. Stahl - Pisum sativum b. Alfred Hershey and Martha Chase - TMV c.…
  24. 24All of the following are part of an operon except
  25. 25The difference between spermiogenesis and spermiation is (NEET 2018)
  26. 26The amnion of mammalian embryo is derived from
  27. 27Match the items given in Column I with those in Column II and select the correct option given below : Column I a.…
  28. 28Hormones secreted by the placenta to maintain pregnancy are (NEET 2018)
  29. 29Which of the following is an occupational respiratory disorder?
  30. 30Match the items given in Column I with those in Column II and select the correct option given below: Column I a. Tidal…
  31. 31Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively?
  32. 32Use of bioresources by multinational companies and organisations without authorisation from the concerned country and…
  33. 33Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes? (NEET 2018)
  34. 34A ‘new’ variety of rice was patented by a foreign company, though such varieties have been present in India for a long…
  35. 35In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for…
  36. 36A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by
  37. 37Which of the following characteristics represent 'Inheritance of blood groups' in humans? a. Dominance b. Co-dominance…
  38. 38Which of the following pairs is wrongly matched?
  39. 39Winged pollen grains are present in
  40. 40Which one is wrongly matched?
  41. 41Which one of the following plants shows a very close relationship with a species of moth, where none of the two can…
  42. 42Double fertilization is
  43. 43Which of the following has proved helpful in preserving pollen as fossils? (NEET 2018)
  44. 44Pollen grains can be stored for several years in liquid nitrogen having a temperature of (NEET 2018)
  45. 45Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system
  46. 46Which of the following animals does not undergo metamorphosis?
  47. 47Which one of these animals is not a homeotherm?
  48. 48Match the items given in Column I with those in Column II and select the correct option given below: Column I…
  49. 49Match the items given in Column I with those in Column II and select the correct option given below : Column I a.…
  50. 50Stomatal movement is not affected by
  51. 51Stomata in grass leaf are
  52. 52Casparian strips occur in
  53. 53Which part of poppy plant is used to obtain the drug “Smack”?
  54. 54In which disease does mosquito transmitted pathogen cause chronic inflammation of lymphatic vessels?
  55. 55Which of the following is not an autoimmune disease?
  56. 56Which of the following hormones can play a significant role in osteoporosis?
  57. 57Which of the following is an amino acid derived hormone?
  58. 58Which one of the following statements is incorrect?
  59. 59Among the following sets of examples for divergent evolution, select the incorrect option :
  60. 60According to Hugo de Vries, the mechanism of evolution is
  61. 61The similarity of bone structure in the forelimbs of many vertebrates is an example of
  62. 62Which of the following is not a product of light reaction of photosynthesis?
  63. 63Oxygen is not produced during photosynthesis by
  64. 64Which of the following structures or regions is incorrectly paired with its functions?
  65. 65Nissl bodies are mainly composed of
  66. 66Match the items given in Column I with those in Column II and select the correct option given below : Column I a.…
  67. 67Match the items given in Column I with those in Column II and select the correct option given below : Column I a.…
  68. 68Which of these statements is incorrect?
  69. 69What is the role of NAD+ in cellular respiration?
  70. 70Sweet potato is a modified
  71. 71Pneumatophores occur in
  72. 72Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?
  73. 73The correct order of steps in Polymerase Chain Reaction (PCR) is
  74. 74What type of ecological pyramid would be obtained with the following data? Secondary consumer : 120 g; Primary consumer…
  75. 75Conversion of milk to curd improves its nutritional value by increasing the amount of
  76. 76The contraceptive 'SAHELI'
  77. 77Nissl bodies are mainly composed of
  78. 78Calcium is important in skeletal muscle contraction because it
  79. 79All of the following are included in 'ex-situ conservation' except (NEET 2018)
  80. 80The stage during which separation of the paired homologous chromosomes begins is
  81. 81The two functional groups characteristic of sugars are
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