Chemistry Question Bank

Avogadro’s hypothesis states that

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

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.

Which of the following represent Gay Lussac’s law? I. P constant T II. P T P T III. P V P V Choose the correct option.

A relationship is obtained between density and pressure of a gas as follows

A balloon is filled with hydrogen at room temperature. It will burst, if pressure exceeds 0.2 bar. If at 1 bar pressure the gas occupied 2.27 L volume, up to what volume can be balloon be expanded?

What will be the minimum pressure required to compress 2 Litre of gas at 1 bar to 1 litre at 25oC?

The volume of ammonia obtained by the combination of 10 mL of N2 and 30 mL of H2 is :

Gay-Lussac’s law of combining volume is applicable for those gases which on mixing :

A gas is initially at 1 atm pressure. To compress it to 1/4 th of its initial volume, assuming temperature to be constant pressure to be applied is

A sample of gas has a volume of 0.2 lit measured at 1 atm pressure and 0oC. At the same pressure, but at 273K, its volume will become

A sample of gas occupies 100 ml at 27oC and 740 mm pressure. When its volume is changed to 80 ml at 740 mm pressure, the temperature of the gas will be

When gases are heated from 20 to 40ºC at constant pressure, their volumes

300 ml of a gas at 27oC is cooled to –3oC at constant pressure, the final volume 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

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?

A gas of volume 100 cc. is kept in a vessel at pressure 104 Pa maintained at temperature 24ºC if now the pressure is increased to 105 Pa, keeping the temperature constant, then the volume of the gas becomes

If 20 cm3 gas at 1 atm. is expanded to 50 cm3 at constant T, then what is the final pressure ? (a) 20 50 x (b) 50 20 x (c) x x

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

If Z is a compressibility factor, Van der Waals equation at low pressure can be written as: (WB JEE 2014) (a) a Z =1- VRT (b) Pb Z =1- RT (c) Pb Z =1+ RT (d) RT Z =1+ Pb

The compressibility factor for a real gas at high pressure is (OJEE 2012) (a) RT Pb

One mole of oxygen at 273 K and one mole of sulphur dioxide at 546 K are taken in two separate containers, then (UPCPMT 2012)

For gaseous state, if most probable speed is denoted by C*, average speed by C and root mean square speed by C, then for a large number of molecules, the ratios of these speeds are (WB JEE 2013)

At what temperature will the RMS velocity of SO2 be the same as that of O2 at 303K? (KCET 2013)

Which of the following represent Gay Lussac’s law? I. P constant T II. P T P T III. P V P V Choose the correct option.