Practice questions
88551 published questions with worked solutions.
- Proton with kinetic energy of 1 MeV moves from south to north. It gets an acceleration of 10^ 12 m/ s ^2 by an applied magnetic...
- Effective capacitance of parallel combination of two capacitors C_1 and C_2 is 10 . When these capacitors are individually...
- The critical angle of a medium for a specific wavelength, if the medium has relative permittivity 3 and relative permeability 4 3...
- In finding the electric field using Gauss law the formula | E |= q_ enc _0|A| is applicable. In the formula _0 is permittivity of...
- A leak proof cylinder of length 1m, made of a metal which has very low coefficient of expansion is floating vertically in water...
- Consider a solid sphere of radius R and mass density (r)= _0 (1- r^2 R^2 ), 0<r R. The minimum density of a liquid in which it...
- Four resistances of 15 , 12 , 4 and 10 respectively in cyclic order to form Wheatstone's network. The resistance that is to be...
- A point object in air is in front of the curved surface of a plano-convex lens. The radius of curvature of the curved surface is...
- A one metre long (both ends open) organ pipe is kept in a gas that has double the density of air at STP. Assuming the speed of...
- A particle is moving along the x-axis with its coordinate with time 't' given by x(t)=10+8t-3t^2. Another particle is moving...
- A body A, of mass m = 0.1 kg has an initial velocity of 3 i ms ^ -1 . It collides elastically with another body, B of the same...
- Arrange the following compounds in increasing order of C – OH bond length : methanol, phenol, p-ethoxyphenol
- The third ionization enthalpy is minimum for :
- As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order :Not in JEE Main or NEET syllabus
- The predominant intermolecular forces present in ethyl acetate, a liquid, are:
- A flask contains a mixture of isohexane and 3-methylpentane. One of the liquids boils at 63 °C while the other boils at 60 °C...
- The strength of an aqueous NaOH solution is most accurately determined by titrating : (Note : consider that an appropriate...
- For the Balmer series in the spectrum of H atom, =R_H 1 n_1^2 - 1 n_2^2 , the correct statements among (I) to (IV) are : (I) As...
- The number of bonds between sulphur and oxygen atoms in S_2O_8^ 2- and the number of bonds between sulphur and sulphur atoms in...
- Which of the following statement is not true for glucose ?