A gas has double the average velocity of gas at any temperature. The gas may be
1.
2.
3.
4.
The densities of two gases are in the ratio of 1:16. The ratio of their rates of diffusion is
1. 16 : 1
2. 4 : 1
3. 1 : 4
4. 1 : 16
The critical temperature of the water is higher than that of because the molecule has
1. fewer electrons than
2. two covalent bonds
3. V-shape
4. dipole moment
56 g of nitrogen and 96 g of oxygen are mixed iso-thermally and a total pressure of 10 atm. The partial pressures of oxygen and nitrogen (in atm) are respectively
1. 4, 6
2. 5, 5
3. 6, 4
4. 8, 2
A bottle of dry ammonia and a bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends, the white ammonium chloride ring first formed will be
1. at the centre of the tube
2. near the hydrogen chloride bottle
3. near the ammonia bottle
4. throughout the length of the tube
If a gas expands at a constant temperature
i. the pressure decreases
ii. the kinetic energy of the molecules remains the same
iii. the kinetic energy of the molecules decreases
iv. the number of molecules of the gas increase
1. i, ii
2. i, ii, iii
3. i, ii, iv
4. ii, iii
At what temperature the RMS velocity of gas shown at c will be doubled?
1. 626 K
2. 1019
3. 21 K
4. 1019 K
The density of gas A is twice that of B and the molecular weight of A is half of that of B. The Ratio of partial pressures of is
1.
2.
3.
4.
6.4 grams of and 0.99 atm pressure occupies a volume of 2.241 L. The correct statement about this gas is-
[Molecular mass of gas A =64]
1. The gas is ideal
2. The gas is real with intermolecular attraction
3. The gas is real without intermolecular repulsion
4. The gas is real with intermolecular repulsion greater than intermolecular attraction
The density of a gas is 1.964 g at 273 K and 76 cm Hg. The gas is-
1.
2.
3.
4. Xe