A gaseous mixture contains 56 g of N2, 44 g of CO2 and 16 g of CH4. The total pressure of the mixture is 720 mm Hg. The partial pressure of CH4 is-
1. 180 mm
2. 360 mm
3. 540 mm
4. 720 mm
Density ratio of O2 and H2 is 16 : 1. The ratio of their r.m.s. velocities will be-
1. 4 : 1
2. 1 : 16
3. 1 : 4
4. 16 : 1
A gas such as carbon monoxide would be most likely to obey the ideal gas law at-
1. High temperature and low pressure
2. Low temperature and high pressure
3. High temperature and high pressure
4. Low temperature and low pressure
Equal masses of H2, O2 and methane have been taken in a container of volume V at temperature 27°C in identical conditions. The ratio of the volumes of gases H2: O2 : CH4 would be-
1. 8:16:1
2. 16:8:1
3. 16:1:2
4. 8:1:2
Maximum deviation from ideal gas is shown by-
1. H2(g)
2. N2(g)
3. CH4(g)
4. NH3(g)
With 100% increase in temperature, the average velocity of a gaseous molecule increases by -
1. 2.8 times
2. 4.0 times
3. 1.4 times
4. 2.0 times
In a flask of volume V litres, 0.2 mol of oxygen, 0.4 mol of nitrogen, 0.1 mol of ammonia and 0.3 mol of helium are enclosed at . If the total pressure exerted by these non-reacting gases is one atmosphere, the partial pressure exerted by nitrogen is-
1. 1 atm
2. 0.1 atm
3. 0.2 atm
4. 0.4 atm
Equal weights of methane and oxygen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by oxygen is-
1. 1/3
2. 1/2
3. 2/3
4.
The partial pressure of H2 in a flask containing 2 g of H2, 14 g of N2, and 16 g of O2 is-
1. 1/2 of the total pressure
2. 1/3 of the total pressure
3. 1/4 of the total pressure
4. 1/16 of the total pressure
The volume of 0.0168 mol of O2 obtained by decomposition of KClO3 and collected by displacement of water is 428 ml at a pressure of 754 mm Hg at 25°C. The pressure of water vapour at 25°C is-
1. 18 mm Hg
2. 20 mm Hg
3. 22 mm Hg
4. 24 mm Hg