The kinetic energy of 4 moles of nitrogen gas at 127C is ......... Kcals. (R=2 cal )
1. 4400
2. 3200
3. 4800
4. 1524
A gaseous mixture contains 56 g of The pressure of mixture is 720 mm of Hg. The partial pressure of methane is
1. 75 mm
2. 160 mm
3. 180 mm
4. 215 mm
At oxygen was collected. If the temperature is constant, what volume will the oxygen occupy at 760 mm pressure?
1. 365 mL
2. 2 mL
3. 10 mL
4. 20 mL
At a certain pressure, volume of a gas at C is 20 litre. If the pressure and temperature are doubled, its volume will be
1. 20 liter
2. 40 liter
3. 8.2 liter
4. 10.9 liter
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