Practice questions
88551 published questions with worked solutions.
- A person of mass M is sitting on a swing of length L and swinging with an angular amplitude _0. If the person stands up when the...
- A point dipole p = -p_0 x is kept at the origin. The potential and electric field due to this dipole on the y-axis at a distance...
- An electromagnetic wave is represented by the electric field E = E_0 n [ t + (6y - 8z)]. Taking unit vectors in x, y and z...
- Two moles of helium gas is mixed with three moles of hydrogen molecules (taken to be rigid). What is the molar specific heat of...
- A magnetic compass needle oscillates 30 times per minute at a place where the dip is 45°, and 40 times per minute where the dip...Not in JEE Advanced syllabus
- Which of the following combinations has the dimension of electrical resistance ( _0 is the permittivity of vacuum and _0 is the...
- A man (mass = 50 kg) and his son (mass = 20 kg) are standing on a frictionless surface facing each other. The man pushes his son...
- A submarine (A) travelling at 18 km/hr is being chased along the line of its velocity by another submarine (B) travelling at 27...
- The correct set of species responsible for the photochemical smog is:Not in JEE Main or NEET syllabus
- The mole fraction of a solvent in aqueous solution of a solute is 0.8. The molality (in mol kg^ -1 ) of the aqueous solution is:
- Glucose and Galactose are having identical configuration in all the positions except position:
- The correct sequence of thermal stability of the following carbonates is:Not in JEE Main or NEET syllabus
- What is the molar solubility of Al(OH)_3 in 0.2 M NaOH solution? Given that, solubility product of Al(OH)_3 = 2.4 10^ -24 :
- Peptization is a:Not in JEE Main or NEET syllabus
- Enthalpy of sublimation of iodine is 24 cal g^ -1 at 200 °C. If specific heat of I_2(s) and I_2(vap) are 0.055 and 0.031 cal g^...
- The idea of froth floatation method came from a person X and this method is related to the process Y of ores. X and Y,...Not in JEE Main or NEET syllabus
- An organic compound 'A' is oxidized with Na_2O_2 followed by boiling with HNO_3. The resultant solution is then treated with...
- An ideal gas is allowed to expand from 1 L to 10 L against a constant external pressure of 1 bar. The work done in kJ is:
- An element has a face-centred cubic (fcc) structure with a cell edge of a. The distance between the centres of two nearest...Not in JEE Main or NEET syllabus
- In the following reaction; xA → yB: _ 10 [- d[A] dt ] = _ 10 [ d[B] dt ] + 0.3010. 'A' and 'B' respectively can be: