The density of neon will be highest at:
(1) STP
(2) 0 C,2 atm
(3) 273 C, 1 atm
(4) 273 C,2 atm
At 27 C, the ratio of root mean square speeds of ozone to oxygen is-
1.
2.
3.
4. 0.25
How many mole of He gas occupy 22.4 litre at 30 C and one atmospheric pressure?
(1) 0.90
(2) 1.11
(3) 0.11
(4) 1.0
4.0 g of argon gas pressure P and temperature T K in a vessel. On increasing the temperature by 50o, 0.8 g of argon was given out to maintain the pressure P.
The original temperature was:
1. 73 K
2. 100 K
3. 200 K
4. 510 K
Correct statement regarding the heating of a liquid is -
1. Surface tension increases
2. Surface tension is lowered
3. Viscosity increases
4. Surface tension is not affected
Which of the following laws leads us to arrive at the conclusion that 1 g-molecule of each gas at STP occupies a volume of 22.4 L?
1. Dalton's law
2. Law of combining volumes
3. Avogadro's law
4. Boyle's law
0.1 mole of gas absorbs 41.75 J of heat, the rise in temperature occurs , the gas must be
(1) Triatomic
(2) Diatomic
(3) Monoatomic
(4) (2) and (3) both
Van der Waals real gas, act as an ideal gas, at :
(1) High temperature, low pressure.
(2) Low temperature, high pressure.
(3) High temperature, high pressure.
(4) Low temperature, low pressure.
By the ideal gas law the pressure of 0.60 mol gas in a 3.00 litre vessel at is
(1) 48.9 atm
(2) 4.89 atm
(3) 0.489
(4) 489 atm