(a) 546°C (b) 182°C (c) 819°C (d) 646°C Answer-a (9)
O2 gas is taken at 27°C and pressure 76 cm. Of Hg. Then find out volume of gas (in litre) (a) 1.53 (b) …
[P+(a/V2)][v-b]=RT (a) Both a and b represent correction in volume (b) Both a and b represent adhesive force between molecules (c) a represents adhesive force between molecules and b correction in volume (d) a represents correction in volume and …
(a) The temperature must be 0 K (b) The temperature must be less than 0°C (c) The temperature must be less than the critical temperature (d) The temperature must be less than the reduced temperature Answer-c (5)
( T1,T2) volume (V1,V2) and pressure (P1,P2) respectively. If the valve joining the two vessels is opened, the temperature inside the vessel at equilibrium will be (a) T1 +T2 …
5°C , there occurred an increase of 1% in its pressure. The original temperature of the gas was (a) 500 °C (b) 273°C (c) 227°C …
27°C. Half of the mass of the gas is removed from the vessel and temperature of the remaining gas is increased to 87°C. Then the pressure of the gas in the vessel will be (a) 5 atm (b) 6 atm …
(a) Faster in solids than in liquids and gases (b) Faster in liquids than in solids and gases (c) Equal to solids, liquids and gases (d) Faster in gases than in liquids and solids Answer-d (18)
O2 gas (molar mass 32) at a temperature T. The pressure of the gas is P. An identical vessel containing one mole of He gas (molar mass 4) at temperature 2T has a pressure of (a) P/8 …
(a) It obeys Boyle’s law (b) It follows PV = RT (c) Internal energy depends on temperature only (d) It follows Vander-Waal’s equation Answer-d (12)
(a) Varies inversely as its mass (b) Varies inversely as the square of its mass (c) Varies linearly as its mass (d) Is independent of its mass Answer-c (8)
m1,m2 and m3 and the number of molecules in their respective containers are N1,N2 and N3 . The gas pressure in the containers are P1,P2 and P3 respectively. All the gases are now mixed and put in one of the …
(a) 2 (b) 4 (c) 1/4 (d) 1/2 Answer-d (6)
(a) 1092 K (b) 273 K (c) 546°C (d) 273°C Answer-d (2)
O2 is (a) PV = 8RT (b) PV = RT/4 (c) PV = RT (d) PV = RT/2 Answer-b (6)
(a) 1800°C (b) 162°C (c) 1527°C (d) 600°C Answer-c (87)
(a) Number of molecules (b) Atomic number (c) Mass number (d) Number of moles Answer-d (4)
1500 m3 of helium at 27°C and 4 atmospheric pressure. The value of helium at -3°C temperature and 2 atmospheric pressure will be (a) 1500 m3 (b) 1700 m3 (c) 1900 m3 (d) 2700 m3 Answer-d (7)
(a) 2 times (b) 4 times (c) (1/4) times (d) (1/2) times Answer-c (12)
27°C temperature and 30 atmospheric pressure is allowed to expand to the atmospheric pressure. If the volume becomes 10 times its initial volume, then the final temperature becomes (a) 100°C (b) 173°C (c) 273°C (d) – 173°C Answer-d (7)
0°Cand 2 atm pressure will be (a) 0.56 litre (b) 1.2 litres (c) 2.4 litres (d) 5.6 litres Answer-a (3)
27°C and its temperature is raised to 52°C. The mass of the gas that has to be released to maintain the temperature of the gas in the flask at 52°C and the pressure remaining the same is (a) 2.5 g …
27° is heated till its pressure and volume are doubled. The final temperature attained by the gas is (a) 927°C (b) 900°C (c) 627°C (d) 327°C Answer-a (4)
(a) Einstein (b) Newton (c) Maxwell (d) Raman Answer-c (5)
If Cb and Ca are the velocities of sound in this gas before and after expansion respectively, then Ca is equal to (a) 2Cb …
(a) 50 ml (b) 100 ml (c) 200 ml (d) 500 ml Answer-b (8)
(a) PV=(5/32)RT (b) PV=5RT (c) PV=(5/2)RT (d) PV=(5/16)RT (Where R is the gas constant) Answer-a (2)
(a) 0.4% (b) 0.2% (c) 0.1% (d) 0.8% Answer-a (3)
500m3 of helium at 27°C and 1 atmosphere pressure. The volume of the helium at – 3°C temperature and 0.5 atmosphere pressure will be (a) 500m3 (b) 700m3 (c) 900m3 …
(a) A constant (b) Approx. equal to the universal gas constant (c) Directly proportional to its temperature (d) Inversely proportional to its temperature Answer-c (11)
(a) mkT (b) P/kT (c) P/kTV (d) Pm/kT Answer-d (4)
(a) 100 cc (b) 400 cc (c) 2.5 cc (d) 104 cc Answer-c (11)
(a) The nature of the gas used in the experiment (b) The magnitude of g in the laboratory (c) The atmospheric pressure (d) The quantity of the gas enclosed Answer-d (3)
1.64×10-3 atmospheres and temperature 200 K having the volume 1 cc are (a) 6.02×1016 (b) 2.63×1016 (c) 3.01×1019 (d) 12.04×1019 Answer-a (8)
(a) 2 cal/K (b) 10 cal/K (c) 0.2 cal/K (d) 200 cal/K Answer-a (6)
(a) 4 gm (b) 4.21 gm (c) 1.13 gm (d) 10 gm Answer-c (83)
(a) 0.29 J/K-gm (b) 4.2 J/K–gm (c) 8.3 J/K-gm (d) 16.5 J/K-gm Answer-a (93)
(a) Which obeys Vander Waal’s equation (b) Which obeys gas equation at every temperature and pressure (c) The molecules of which are having potential energy (d) Which is a inert gas Answer-b (6)