Problem 60
The temperature of 20 litres of nitrogen was increased from \(100 \mathrm{~K}\) to \(300 \mathrm{~K}\) at constant pressure. Change in volume will be (1) 80 litres (2) 60 litres (3) 40 litres (4) 20 litres
Problem 62
Two scaled containcrs of the samc capacity and at the same tempcraturc arc filled with \(44 \mathrm{~g}\) of \(\mathrm{II}_{2}\) gas in onc and \(44 \mathrm{~g}\) of \(\mathrm{CO}_{2}\) in the other. If the \(P\) of \(\mathrm{CO}_{2}\) is \(1 \mathrm{~atm}\) in other the \(P\) of \(\mathrm{II}_{2}\) in its container will be (1) 1 atm (2) zero (3) \(22 \mathrm{~atm}\) (4) 4 atm
Problem 63
A gas is found to have the formula \(|\mathrm{CO}|_{x}\). Its \(\mathrm{VD}\) is 70 . The value of \(x\) must be (1) 3 (2) 5 (3) 6 (4) \(2.5\)
Problem 65
It is desired to increase the volume of 800 cc of a gas by \(20 \%\) keeping the pressure constant. To what temperature the gas be heated, if the initial temperature is \(22^{\circ} \mathrm{C}\) ? (1) \(360^{\circ} \mathrm{C}\) (2) \(87 \mathrm{~K}\) (3) \(454 \mathrm{~K}\) (4) \(81^{\circ} \mathrm{C}\)
Problem 66
What will happen to the pressurc of a 5 litres sample of a gas at 5 atmospheres if it is heated from \(250 \mathrm{~K}\) to \(300 \mathrm{~K}\) and the volume is kept constant? (1) \(6 \mathrm{~atm}\) (2) \(4.16 \mathrm{~atm}\) (3) \(3 \mathrm{~atm}\) (4) \(2.0 \mathrm{~atm}\)
Problem 68
\(\Lambda 100 \mathrm{~mL}\) sample of a gas at \(73^{\circ} \mathrm{C}\) and 2 atmospheres is heatcd to \(127^{\circ} \mathrm{C}\) and the pressure is reduced to \(0.5\) atmosphere. What will be the final volume? (1) \(8000 \mathrm{~mL}\) (2) \(800 \mathrm{~mL}\) (3) \(400 \mathrm{~mL}\) (4) \(4000 \mathrm{~mL}\)
Problem 70
\(\Lambda\) cooking gas cylinder can resist a prcssurc of \(15 \mathrm{~atm}\). At \(27^{\circ} \mathrm{C}\) the pressurc of the gas is \(12 \mathrm{~atm}\). Calculate the minimum temperature in \({ }^{\circ} \mathrm{C}\) ' above which it burst (1) \(375^{\circ} \mathrm{C}\) (2) \(1002^{\circ} \mathrm{C}\) (3) \(102^{\circ} \mathrm{C}\) (4) \(300^{\circ} \mathrm{C}\)
Problem 74
At constant pressure a certain gas at \(0^{\circ} \mathrm{C}\), was cooled until its volume was reduced to half. The temperature at this stage (1) \(-130.5^{\circ} \mathrm{C}\) (2) \(-140.0^{\circ} \mathrm{C}\) (3) \(-136.5^{\circ} \mathrm{C}\) (4) \(-120^{\circ} \mathrm{C}\)
Problem 75
An open vessel at \(27^{\circ} \mathrm{C}\) is heated until \(3 / 4\) of the air in it has been expelled. Assuming that the volume of the vessel remains constant, the temperature to which the vessel has been heated (1) \(210^{\circ} \mathrm{C}\) (2) \(1200^{\circ} \mathrm{C}\) (3) \(220^{\circ} \mathrm{C}\) (4) \(927^{\circ} \mathrm{C}\).
Problem 77
The pressure exerted by a gas in a 10 -lit vessel at \(27^{\circ} \mathrm{C}\) is \(5 \mathrm{~atm}\). IIow many balloons of \(0.5\) litre size can be filled with the outcoming gas? (1) 100 (2) 80 (3) 50 (4) 40
