The pressure of a mixture of 4 g of ${\mathrm{O}}_2$ and 2 g of ${\mathrm{H}}_2$ confined in a bulb of 1.0 L capacity at $0°\mathrm{C}$

(1) 25.18 atm

(2) 31.205 atm

(3) 40.215 atm

(4) 15.210 atm

The volume occupied by 9.0 g of nitrogen gas at 300 K and 750 mmHg pressure is

(1) 5.854

(2) 6.7432

(3) 8.8462

(4) 8.0225

The rms velocity of ${\mathrm{CO}}_2$ at a temperature T (in Kelvin) is X cm ${\sec }^{-1}$. At what temperature (in Kelvin), the rms velocity of nitrous oxide would be 4 X ${\sec }^{-1}$?

( Atomic weights of C, N, and O are respectively 12, 14 and 16)

(1) 16T

(2) 2T

(3) 4T

(4) 32T

7.5 grams of gas occupy 5.6 liters of volume at STP. The gas is..

(Atomic weight of C, N, and O are 12, 14, 16 respectively)

(1) NO

(2) ${\mathrm{N}}_2\mathrm{O}$

(3) CO

(4) ${\mathrm{CO}}_2$

The compressibility factor for 1 mol of a van der Waals gas at $0°\mathrm{C}$ and 100 atmospheric pressure is found to be 0.5. The volume of gas is-

1. 2.0224 L

2. 1.4666 L

3. 0.8542 L

4. 0.1119 L

4 grams of an ideal gas occupies 5.6035 liters of volume at 546 K and 2 atm pressure. What is its molecular weight?

1. 4

2. 16

3. 32

4. 64

The kinetic energy of 4 moles of nitrogen gas at 127$°$C is ......... Kcals. (R=2 cal $mo{l}^{-1} K^{-1}$)

1. 4400

2. 3200

3. 4800

4. 1524

A gaseous mixture contains 56 g of $N_2, 44 g of C{O}_2 and 16 g of C{H}_4.$ 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 $25°C and 730 mm pressure, 380 mL of dry$ 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 $27°$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