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
- 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…
- 2A resistance wire in the left gap of a metre bridge balances a 10 resistance in the right gap at a point dividing the…
- 3The colour code of a resistance is given (Yellow, Violet, Brown, Gold). The values of resistance and tolerance…
- 4The solids which have the negative temperature coefficient of resistance are:
- 5Which of the following graphs represents the variation of resistivity ( ) with temperature (T) for copper?
- 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…
- 7Taking into account the significant figures, what is the value of 9.99 m - 0.0099 m?
- 8Dimensions of stress are:
- 9The capacitance of a parallel plate capacitor with air as medium is 6 microF. With the introduction of a dielectric…
- 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…
- 11The solids which have the negative temperature coefficient of resistance are:
- 12The increase in the width of the depletion region in a p-n junction diode is due to:
- 13The torque about the origin when a force 3ĵ N acts on a particle whose position vector is 2k̂ m is:
- 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…
- 15Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has…
- 16The Brewster's angle i_B for an interface should be
- 17Light with an average flux of 20 W/cm² falls on a non-reflecting surface at normal incidence having surface area 20…
- 18The ratio of contributions made by the electric field and magnetic field components to the intensity of an…
- 19A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference…
- 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:
- 21An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the…
- 22Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the…
- 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…
- 24A long solenoid of 50 cm length having 100 turns carries a current 2.5 A. The magnetic field at the centre of the…
- 25The average thermal energy for a mono-atomic gas is: (k_B is the Boltzmann constant and T the absolute temperature)
- 26Dimensions of stress are:
- 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…
- 28An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A m⁻¹. The permeability of the material…
- 29The phase difference between displacement and acceleration of a particle in simple harmonic motion is
- 30The quantities of heat required to raise the temperature of two solid copper spheres of radii r₁ and r₂ (r₁ = 1.5 r₂)…
- 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
- 1Identify the incorrect statement.
- 2Reaction between acetone and methylmagnesium chloride, followed by hydrolysis, will give:
- 3The elimination reaction of 2-bromopentane to form pent-2-ene is: (a) a -elimination reaction (b) follows Zaitsev…
- 4What is the change in oxidation number of carbon in the following reaction? CH4(g) + 4Cl2(g) -> CCl4(l) + 4HCl(g)
- 5Which of the following alkanes cannot be made in good yield by the Wurtz reaction?
- 6Which of the following is the correct order of increasing field strength of ligand to form coordination compound?
- 7Urea reacts with water to form A, which decomposes to form B. B, when passed through Cu^2+ (aq), gives a deep-blue…
- 8The reaction between benzaldehyde and acetophenone in the presence of dilute NaOH is known as:
- 9The reaction between acetone (CH3COCH3) and methylmagnesium chloride (CH3MgCl) followed by hydrolysis gives
- 10Identify compound X in the following reaction: C6H5-CH3 ->[Cl2][h ] X ->[H2O][373 K] C6H5-CHO
- 11Which of the following is a basic amino acid?
- 12Sucrose on hydrolysis gives:
- 13The correct option for free expansion of an ideal gas under adiabatic condition is:
- 14Hydrolysis of sucrose is given by the following reaction: Sucrose + H2O <=> Glucose + Fructose. If the equilibrium…
- 15For the reaction 2Cl(g) -> Cl2(g), the correct option is:
- 16Identify a molecule which does not exist.
- 17Which of the following set of molecules will have zero dipole moment?
- 18A tertiary butyl carbocation is more stable than the secondary butyl carbocation because of which one of the following?
- 19Paper chromatography is an example of
- 20For the elimination reaction of 2-bromopentane to form pent-2-ene, consider the following statements: (a) It is a…
- 21Match the following oxides with their nature. Column-I (Oxide) (a) CO (b) BaO (c) Al2O3 (d) Cl2O7 Column-II (Nature)…
- 22Match the following IUPAC provisional names with their IUPAC official names. Column-I (Name) (a) Unnilunium (b)…
- 23Which of the following alkane cannot be made in good yield by Wurtz reaction?
- 24An alkene on ozonolysis gives methanal (HCHO) as one of the products. Its structure is:
- 25The mixture which shows positive deviation from Raoult's law is:
- 26The freezing point depression constant (K_f) of benzene is 5.12 K kg mol⁻¹. The freezing point depression for the…
- 27Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give
- 28Anisole on cleavage with HI gives
- 29On electrolysis of dil. sulphuric acid using platinum (Pt) electrodes, the product obtained at the anode will be:
- 30The number of Faradays (F) required to produce 20 g of calcium from molten CaCl2 (Atomic mass of Ca = 40 g mol-1) is:
- 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…
- 32An increase in the concentration of the reactants of a reaction leads to change in:
- 33The number of protons, neutrons and electrons in 17571Lu, respectively, are:
- 34What is the change in oxidation number of carbon in the following reaction? CH4(g) + 4Cl2(g) -> CCl4(l) + 4HCl(g)
- 35Which one of the following has the maximum number of atoms?
- 36Which of the following amines will give the carbylamine test?
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