Practice questions
88551 published questions with worked solutions.
- If ( 1 ^ 15 C_0 + 1 ^ 15 C_1 ) ( 1 ^ 15 C_1 + 1 ^ 15 C_2 ) ( 1 ^ 15 C_ 12 + 1 ^ 15 C_ 13 ) = ^ 13 ^ 14 C_0 ,^ 14 C_1 , ^ 14 C_ 12...
- If P is a point on the circle x^2 + y^2 = 4, Q is a point on the straight line 5x + y + 2 = 0 and x - y + 1 = 0 is the...
- Consider two identical metallic spheres of radius R each having charge Q and mass m. Their centers have an initial separation of...
- A capacitor C is first charged fully with potential difference of V_0 and disconnected from the battery. The charged capacitor is...
- The r.m.s speed of oxygen molecules at 47°C is equal to that of the hydrogen molecules kept at _____ °C. (Mass of oxygen...
- The kinetic energy of a simple harmonic oscillator is oscillating with angular frequency of 176 rad/s. The frequency of this...
- Given below are two statements: Statement I: In a Young's double slit experiment, the angular separation of fringes will increase...
- A battery with EMF E and internal resistance r is connected across a resistance R. The power consumption in R will be maximum...
- Keeping the significant figures in view, the sum of the physical quantities 52.01 m, 153.2 m and 0.123 m is:
- A spherical body of radius r and density falls freely through a viscous liquid having density and viscosity and attains a...
- Surface tension of two liquids (having same densities), T_1 and T_2, are measured using capillary rise method utilizing two tubes...
- A body of mass 2 kg is moving along x-direction such that its displacement as function of time is given by x(t) = t^2 + t + m,...
- An electromagnetic wave of frequency 100 MHz propagates through a medium of conductivity, = 10 mho/m. The ratio of maximum...
- The terminal velocity of a metallic ball of radius 6 mm in a viscous fluid is 20 cm/s. The terminal velocity of another ball of...
- A particle having electric charge 3 10^ -19 C and mass 6 10^ -27 kg is accelerated by applying an electric potential of 1.21 V....
- In a Young's double slit experiment set up, the two slits are kept 0.4 mm apart and screen is placed at 1 m from slits. If a thin...
- A diatomic gas ( = 1.4) does 100 J of work when it is expanded isobarically. Then the heat given to the gas _____ J.
- Aqueous HCl reacts with MnO_2(s) to form MnCl_2(aq), Cl_2(g) and H_2O(l). What is the weight (in g) of Cl_2 liberated when 8.7 g...
- By usual analysis, 1.00 g of compound (X) gave 1.79 g of magnesium pyrophosphate. The percentage of phosphorus in compound (X)...
- Consider the following data: _fH^ ( methane, g ) = -X kJ mol^ -1 Enthalpy of sublimation of graphite = Y kJ mol^ -1 Dissociation...