(a) E/4 (b) E/16 (c) E (d) 4 E Answer-c (8)
(a) 7 : 6 (b) 6 : 7 (c) 36 : 49 (d) 49 : 36 Answer-b (159)
(a) 0.56×104 J (b) 1.3×102 J (c) 2.7×102 J (d) 3.4×103 J Answer-d (9)
(a) 4.6×103 K (b) 11.6×103 K (c) 23.2×103 K (d) 7.7×103 K Answer-d (4)
(a) (3/2)kT (b) kT (c) (1/2)kT (d) (3/2)RT Answer-c …
(a) Only potential energy (b) Only kinetic energy (c) Potential and kinetic energy both (d) None of the above Answer-b (10)
T1 and T2 are mixed. There is no loss of energy. The masses of the molecules are m1 and m2 and the number of molecules in the gases are n1 and n2 The temperature of mixture will be (a) (T1 …
(a) 2×√3R×300 gm×cm/sec (b) 2×3×R×300 gm×cm/sec (c) 1×√3R×300 gm×cm/sec (d) Zero Answer-d (10)
(a) P (b) < P (c) > P (d) Zero Answer-c (4)
(a) Increase continuously (b) Decreases continuously (c) First increases and then decreases (d) First increase and then becomes constant Answer-c (4)
CO2 mixture at 27°C. If R = 8.31 J/mole kelvin, then the pressure in the vessel in N/m2 will be (approx.) (a) 5×105 (b) 5×104 (c) 106 …
(a) 100 J (b) 3000 J (c) 450 J (d) 150 J Answer-d (17)
(a) Transfer momentum to the walls (b) Momentum becomes zero (c) Move in opposite directions (d) Perform Brownian motion Answer-a (24)
(a) 0.56×104 J (b) 1.3×102 J (c) 2.7×102 J …
6.21×10-21 J and 484 m/s respectively. The corresponding values at 600 K are nearly (assuming ideal gas behaviour) (a) 12.42×1021 J,968 m/s (b) 8.78×1021 J,684 m/s (c) 6.21×1021 J,968 m/s …
(a) Less than 1 eV (b) A few keV (c) 50-60 eV (d) 13.6 eV Answer-a (11)
(a) 137°C (b) 127°C (c) 100°C (d) 105°C Answer-a (8)
(a) Becomes zero (b) Becomes maximum (c) Becomes minimum (d) Remains constant Answer-a (8)
(a) (1/2)PV (b) (3/2)PV (c) (5/2)PV (d) 3PV Answer-b (7)
(a) 16 : 1 (b) 1 : 8 (c) 8 : 1 (d) 1 : 1 Answer-d (20)
(a) Double (b) Half (c) One fourth (d) Four times Answer-d (4)
H2 and He gases. Which of the following statements are corrects (a) The average translational kinetic energies of H2 molecules and He atoms are same (b) The average energies of H2 molecules and He atoms are same (c) H2 molecules have greater …
(a) Total number of molecules (b) Average kinetic energy (c) Root mean square velocity (d) Mean free path Answer-b (11)
(a) Kinetic energy (b) Potential energy (c) Vibrational energy (d) Density Answer-a (4)
(a) (nkT)/N (b) (nkT)/(2N) (c) (nkT)/2 …
O2 (molar mass 32) molecules at a particular temperature is 0.048 eV. The translational kinetic energy of N2 (molar mass 28) molecules in eV at the same temperature is (a) 0.0015 (b) 0.003 (c) 0.048 …
6.21×10-21 J . Its average kinetic energy at 227°C will be (a) 52.2×10-21 J (b) 5.22×10-21 J (c) 10.35×10-21 J …
E1 . If the temperature is increased to 327°C, then kinetic energy would be (a) 2E1 (b) (1/2)E1 …
(a) (3/2)RT (b) (2/3)RT (c) (1/2)RT …
(a) All are correct (b) I and IV are correct (c) IV is correct (d) None of these Answer-d (7)
(a) 54°C (b) 300 K (c) 327°C (d) 108°C Answer-c (6)
(a) 100 J (b) 3000 J (c) 450 J (d) 150 J Answer-d (23)
(a) (3RT)/(2N) (b) (3RT)/(2M) (c) (3RT)/2 …
(a) 2490 joules (b) 2490 ergs (c) 830 joules (d) 124.5 joules Answer-a (10)
(a) 40°C (b) 80°C (c) 313°C (d) 586°C Answer-c (8)
(a) 3 RT (b) (5/2) RT (c) (3/2) RT (d) (1/2) RT Answer-b (4)
(a) Is proportional to the square root of the absolute temperature of the gas (b) Is proportional to the absolute temperature of the gas (c) Is proportional to the square of the absolute temperature of the gas (d) Does not …
(a) Halved (b) Unchanged (c) Doubled (d) Increased by factor √2 Answer-c (16)
(a) (3/2)RT (b) (1/2)KT (c) (1/2)RT …
(a) The number of molecules in the gas (b) The pressure of the gas only (c) The temperature of the gas only (d) None of the above is enough by itself Answer-c (12)