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 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
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
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 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.