Chemistry Question Bank

The density of CCl4 vapour at 0ºC and 76 cm Hg in g/litre is:

A gas at 298 K is shifted from a vessel of 250 cm3 capacity to that of 1L capacity. The final pressure of the gas will

A gaseous mixture is the mixture of 2 moles of A and 3 moles of B. Total pressure of the mixture is 5 atm. What is the partial pressure of A and B respectively?

In a mixture of gases, the pressure exerted by the individual gas is called

The pressure of sodium vapour in a 1.0 L container is 10 torr at 1000ºC. How many atoms are in the container?

At 25oC temperature and 730 mm pressure, 380 mL of dry oxygen was collected. If the temperature is held constant, what volume will be oxygen occupy at 760 mm pressure?

At constant temperature, in a given mass of an ideal gas

For an ideal gas, number of moles per litre in terms of its pressure P, temperature T and gas constant R is

Dry ice is solid carbon dioxide. A 0.050 g sample of dry ice is placed in an evacuated 4.6 L vessel at 30ºC. Calculate the pressure inside the vessel after all the dry ice has been converted to CO2 gas.

Avogadro’s law is the combination of I. Charles’ law. II. Boyle’s law. III. Dalton’s atomic theory. IV. Gay lussac’s law of combining volume Select the correct option.

‘Equal volumes of all gases under the same conditions of temperature and pressure contains equal number of molecules’. This is known as

Avogadro’s hypothesis states that

When the temperature of 23 ml of dry CO2 gas is changed from 10º to 30ºC at constant pressure of 760 mm, the volume of gas becomes closest to which one of the following ?

Equal volumes of oxygen and an unknown gas weigh 3.00g and 7.50g, respectively. Which of the following is the unknown gas?

In the gas equation PV = nRT, the value of R depends upon

In the gas equation PV = nRT, the value of n depends upon

The value of universal gas constant (R) depends on

Which one of the following is not the value of gas constant (R)? (a) 0.0821 L atm k mol (b) 1.99 cal K mol (c) 8.3 JK mol (d) 10.2 JK mol

An ideal gas equation is also called the …I… Here, I refers to

Which of the following expression is true for an ideal gas ? (a) P V T P V T (b) V V T T P P (c) P T V P T V (d) P VT P V T

An ideal gas equation is arranged as X P M RT M = molecular mass Where, X represents

If 10–4 dm3 of water is introduced into a 1.0 dm3 flask at 300 K. How many moles of water are in the vapour phase when equilibrium is established ? (Given, vapour pressure of H2O at 300 K is 3170 pa R = 8.314 JK–1 mol…

Gas equation PV = nRT is obeyed by ideal gas in

The gases become denser at …A… Here, A refers to

If 40 L of a gas is stored under a pressure of 150 atm at 300 K. How many moles of the gas are present in the cylinder?