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
- 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…
- 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…
- 3A moving block of mass m collides with a stationary block of mass 4m. The lighter block comes to rest after the…
- 4A block of mass m is placed on a smooth inclined wedge ABC of inclination θ. The wedge is given a horizontal…
- 5A body, initially at rest, slides down a frictionless track from a height h (as shown) and just completes a vertical…
- 6Which one of the following statements is incorrect?
- 7The moment of the force F = 4î + 5ĵ + 6k̂ acting at the point (2, 0, -3), about the point (2, -2, -2), is:
- 8A solid sphere rotates freely about its symmetry axis in free space. Its radius is increased keeping the mass constant.…
- 9Three bodies A (solid sphere), B (disc), C (ring), each of mass M and radius R, spin about their symmetry axes with the…
- 10The refractive index of the material of a prism is √2 and the angle of the prism is 30°. One of the two refracting…
- 11An astronomical refracting telescope will have large angular magnification and high angular resolution when it has an…
- 12An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced…
- 13A carbon resistor of (47 ± 4.7) k is to be marked with rings of different colours for its identification. The colour…
- 14A set of 'n' equal resistors (R each) in series with a battery (emf E, internal resistance R) draws current I. In…
- 15A battery of n identical cells (each internal resistance r) in series is short-circuited and the current I measured.…
- 16The volume (V) of a monatomic gas varies with its temperature (T), as shown in the graph (a straight line through the…
- 17The efficiency of an ideal heat engine working between the freezing point and boiling point of water is
- 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…
- 19In a p-n junction diode, change in temperature due to heating:
- 20In the combination of the following gates, the output Y can be written in terms of inputs A and B as:
- 21Unpolarised light is incident from air on a plane surface of a material of refractive index μ. At a particular angle of…
- 22In Young's double slit experiment the separation d between the slits is 2 mm, the wavelength λ of the light used is…
- 23A body initially at rest, sliding along a frictionless track from a height h, just completes a vertical circle of…
- 24A moving block of mass m collides with another stationary block of mass 4m. The lighter block comes to rest after the…
- 25A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale…
- 26Which one of the following statements is incorrect?
- 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…
- 28Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit…
- 29The fundamental frequency of an open organ pipe equals the third harmonic of a closed organ pipe. If the length of the…
- 30A tuning fork produces resonance in a glass tube whose air-column length is varied by a piston. At 27 °C, two…
- 31When the light of frequency 2ν₀ (where ν₀ is the threshold frequency) is incident on a metal plate, the maximum…
- 32An electron of mass m with an initial velocity v = v₀ î (v₀ > 0) enters an electric field E = −E₀ î (E₀ = constant > 0)…
- 33If the mass of the Sun were ten times smaller and the universal gravitational constant G ten times larger, which…
- 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…
- 35The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area…
- 36A toy car with charge q moves on a frictionless horizontal plane surface under the influence of a uniform electric…
- 37The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom is:
- 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:
- 39An EM wave is propagating in a medium with velocity V = V î (along +x). The instantaneous oscillating electric field of…
- 40At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the Earth's…
- 41Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the…
- 42A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current is switched on, the…
- 43A pendulum hung from the roof of a tall building moves freely to and fro as a simple harmonic oscillator. The…
- 44The power radiated by a black body is P and it radiates maximum energy at wavelength λ₀. If the temperature is changed…
- 45A small sphere of radius 'r' falls from rest in a viscous liquid. As a result, heat is produced due to the viscous…
- 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
- 1Which one is the wrong statement?
- 2Which one is a wrong statement?
- 3The correct order of N-compounds in its decreasing order of oxidation states is
- 4Which one of the following elements is unable to form MF6^3- ion?
- 5The correct order of atomic radii in group 13 elements is
- 6Which of the following oxides is most acidic in nature?
- 7Among CaH2, BeH2, BaH2, the order of ionic character is
- 8Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is…
- 9Which one of the following elements is unable to form MF6^3- ion?
- 10In the structure of ClF3, the number of lone pairs of electrons on the central atom Cl is:
- 11Which of the following molecules represents the order of hybridisation sp^2, sp^2, sp, sp from left to right atoms?
- 12Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass.…
- 13Consider the following species: CN^+, CN^-, NO and CN. Which of these will have the highest bond order?
- 14Identify the major products P, Q and R in the following sequence of reactions: C6H6 + CH3CH2CH2Cl ->[anhydrous AlCl3] P…
- 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…
- 16Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It…
- 17Compound A, C8H10O, reacts with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with…
- 18Identify the major products P, Q and R in the following sequence of reactions: C6H6 + CH3CH2CH2Cl ->[anhyd. AlCl3] P P…
- 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…
- 20In the reaction C6H5OH + CHCl3 + NaOH -> salicylaldehyde the electrophile involved is
- 21Compound A, C8H10O, reacts with NaOI (produced by reacting Y with NaOH) to yield a yellow precipitate with a…
- 22Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the…
- 23Iron carbonyl, Fe(CO)5, is:
- 24The type of isomerism shown by the complex [CoCl2(en)2] is:
- 25The geometry and magnetic behaviour of the complex [Ni(CO)4] are:
- 26In which of the following molecules is the order of hybridisation sp^2, sp^2, sp, sp for the carbon atoms from left to…
- 27Which of the following carbocations is expected to be the most stable? (Each is a cyclohexadienyl-type cation bearing…
- 28Which of the following is correct with respect to the -I effect of the substituents? (R = alkyl)
- 29In the Reimer-Tiemann reaction, C6H5-O^- Na^+ + CHCl3 + NaOH -> salicylaldehyde (o-hydroxybenzaldehyde), the…
- 30The correct order of N-compounds in their decreasing order of oxidation states is
- 31Consider the change in oxidation state of bromine corresponding to different E^° values as shown in the Latimer diagram…
- 32For the redox reaction MnO4^- + C2O4^2- + H^+ -> Mn^2+ + CO2 + H2O, the correct coefficients of the reactants for the…
- 33The compound C7H8 (toluene) undergoes the following reactions: C7H8 ->[3Cl2, ] A ->[Br2/Fe] B ->[Zn/HCl] C The product…
- 34Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which, by Wurtz reaction, is converted to…
- 35Which of the following molecules represents the order of hybridisation sp^2, sp^2, sp, sp from left to right atoms?
- 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…
- 37The compound C7H8 undergoes the following reactions: C7H8 ->[Cl2] A ->[Br2/Fe] B ->[Zn/HCl] C The product C is:
- 38Hydrocarbon A reacts with bromine by substitution to form an alkyl bromide, which by the Wurtz reaction is converted to…
- 39Magnesium reacts with an element X to form an ionic compound. If the ground-state electronic configuration of X is…
- 40Which of the following compounds can form a zwitterion?
- 41The difference between amylose and amylopectin is:
- 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…
- 43In which of the following is the number of water molecules maximum?
- 44Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the…
- 45Which one of the following ions exhibits d-d transition and paramagnetism as well?
- 46Which one of the following statements correctly describes the difference between a first-order and a second-order…
- 47When the initial concentration of the reactant is doubled, the half-life period of a zero order reaction
- 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…
- 49Consider the change in oxidation state of bromine corresponding to the standard reduction (electrode) potentials shown…
- 50Nitration of aniline in strong acidic medium also gives m-nitroaniline because
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