1261. On expansion, an ideal gas expands in accordance with the PV- constant. The gas’s temperature will:
A. Increase
B. Decrease
C. Remains Constant *
D. Cannot be determined
1262. The ratio of the number of molecules in containers A and B to the total number of molecules in the container is:
A. 1:2 *
B. 2:1
C. 4:1
D. 3:1
1263. X ml of H2 has emitted through an opening in 5 seconds. The time taken for the emission of same volume of the gas indicated later under indistinguishable Circumstances is :
A. 10 seconds HE:
B. 20 seconds O2 *
C. 25 seconds CO
D. 55 seconds CO2
1264. The van der wall constant “B” is a measure of :
A. Inter molecular attraction
B. Volume occupied by molecules *
C. Inter molecular collision
D. Velocity of molecules
1265. Which of the following is most ideal gas :
A. H2
B. He
C. N2
D. CO2 *
1266. Which of the following is highest energy state of energy :
A. Solid
B. Gas
C. Plasma *
D. Liquid
1267. At what centigrade temperature the volume of a gas at O degree centigrade Doubles of itself, When Pressure remains constant :
A. 0 Degree centigrade
B. 273 Degree centigrade *
C. 373 Degree centigrade
D. 50 Degree centigrade
1268. This of following is not property of liquids:
A. Definite Volume
B. Definite shape *
C. Diffusion
D. Fluidity
1269. Chemical properties of a substance depend upon strength of ________ forces :
A. Intermolecular
B. Intramolecular *
C. Dipole-dipole
D. Van der walls
1270. Molar heat of vaporization of water is :
A. 920 KJ/MOL
B. 40.7KJ/MOL *
C. 16 KJ/MOL
D. 20 KJ/MOL