Practice questions
88551 published questions with worked solutions.
- A projectile is thrown upward at an angle 60^ with the horizontal. The speed of the projectile is 20 m/s when its direction of...
- Given below are two statements: Statement I: Pressure of fluid is exerted only on a solid surface in contact as the...
- Net gravitational force at the centre of a square is found to be F_1 when four particles having mass M, 2M, 3M and 4M are placed...
- The minimum frequency of photon required to break a particle of mass 15.348 amu into 4 particles is _____ kHz. [mass of He...
- A cylindrical tube AB of length , closed at both ends contains an ideal gas of 1 mol having molecular weight M. The tube is...
- Rods x and y of equal dimensions but of different materials are joined as shown in figure. Temperatures of end points A and F are...
- Consider an equilateral prism (refractive index 2 ). A ray of light is incident on its one surface at a certain angle i. If the...
- The volume of an ideal gas increases 8 times and temperature becomes (1/4)^ th of initial temperature during a reversible change....
- The electric field of a plane electromagnetic wave, travelling in an unknown non-magnetic medium is given by, E_y = 20 (3 10^6x -...
- A parallel beam of light travelling in air (refractive index 1.0) is incident on a convex spherical glass surface of radius of...
- A circular disc has radius R_1 and thickness T_1. Another circular disc made of the same material has radius R_2 and thickness...
- Inductance of a coil with 10^4 turns is 10 mH and it is connected to a dc source of 10 V with internal resistance of 10 . The...
- Consider the transition metal ions Mn^ 3+ , Cr^ 3+ , Fe^ 3+ and Co^ 3+ and all form low spin octahedral complexes. The correct...
- Given below are two statements: Statement I: Phenol on treatment with CHCl_3 / aq. KOH under refluxing condition, followed by...
- The energy required by electrons, present in the first Bohr orbit of hydrogen atom to be excited to second Bohr orbit is _____ J...
- A 'p'-block element (E) and hydrogen form a binary cation (EH_x)^+, while EH_3 on treatment with K_2HgI_4 in alkaline medium...
- A first row transition metal (M) does not liberate H_2 gas from dilute HCl. 1 mol of aqueous solution of MSO_4 is treated with...
- The correct order of reactivity of CH_3Br in methanol with the following nucleophiles is F^-, I^-, C_2H_5O^- and C_6H_5O^-
- Match the LIST-I with LIST-II List-I (Thermodynamic Process): (A) Work done in reversible, isothermal expansion of 2 mol of ideal...
- Given below are two statements: Statement I: Benzene is nitrated to give nitrobenzene, which on further treatment with...