An L.P.G. cylinder contains 15 kg of butane gas at and 10 atmospheric pressure, It was leaking and its pressure fell down to 8 atmospheric pressure after one day. The gas leaked in 5 days is
(1) 10 kg
(2) 3 kg
(3) 15 kg
(4) 12 kg
The partial pressure of oxygen in a flask containing 16 g and 32 g is-
1. 1/16 of total pressure
2. 1/2 of total pressure
3. 2/3 of total pressure
4. None of the above
The most probable speeds of the molecules of gas A at and gas B at are in the ratio 0.715:1. The same ratio for gas A at and gas B is 0.954. Find the ratio of molar masses
(1) 1.965
(2) 1.0666
(3) 1.987
(4) 1.466
A 200 mL flask having oxygen at 220 mm and a 300 mL flask having nitrogen at 100 mm are connected in such a way that may combine in their volumes if temperature is kept constant. The total pressure of the gaseous mixture is-
1. 158 mm
2. 138 mm
3. 148 mm
4. 168 mm
Given below is the graphical representation of volumes occupied by several gases at STP at Y axis and mass at X axis. find out which gas/gases is/are not placed at the correct position?
1. He, NH3
2. CH4, He
3. NH3, H2
4. NH3, CH4
The ratio of root mean square velocity to the average velocity of a gas molecule at a particular temperature is
(1) 1:1.086
(2) 2:1.086
(3) 1.086:1
(4) 1.086:2
Which of the following statement(s) are correct:
(1) A plot of log KP versus 1/T is linear
(2) A plot of log (X) versus time is linear for a first-order reaction '
(3) A plot of log P versus 1/T is linear at constant volume
(4) A plot of P versus 1/V is linear at a constant temperature.
(1) 1, 2
(2) 2, 4
(3) 2, 3
(4) 1, 4
The compressibility factor of a gas is less than unity at STP. The correct statement among the following is -
1. > 22.4 L
2. < 22.4 L
3. = 22.4 L
4. = 44.8 L
At and 1 atm, if the density of liquid water is 1.0 g and that of water vapour is 0.0006 g , then the volume occupied by water molecules is 1 litre of steam at that temperature
1. 6
2. 60
3. 0.6
4. 0.06
The root mean square velocity of one mole of a monoatomic gas having molar mass M is .
The relation between the average kinetic energy (E) of the gas and is
1.
2.
3.
4.