PDMC CHEMISTRY GAS LAWS MCQs

At which temperature is the volume of a gas reduced to zero?

• 0K

• 0⁰C

• 273K

• 273⁰C

Which scientist discovered the absolute scale of temperature?

• Charles

• Boyles

• Kelvin

• Gay lussac

At which temperature does a real gas behaves like an ideal gas?

• At high pressure and low temperature

• At low pressure and high temperature

• At low pressure and low temperature

• At high pressure and high temperature

The dimension of the universal gas constant is

• ML²T^-1N^-1

• ML^-1T^-1n^-2K^-1

• ML²T^-1n^-2K

• ML^-1T^-2n^-1K^-1

2 g of Hydrogen Gas, 28 g of Nitrogen Gas, 44 g of CO₂ gas. Which of the following has the largest volume?

• 2g of Hydrogen gas

• 28g of Nitrogen gas

• 44g of CO₂ gas

• All gases have the same volume

Let the pressure P and volume V for a certain gas. If the pressure is increased by 25% at a constant temperature, then what would be the volume of the gas?

• 0.2V

• 0.75V

• 0.8V

• 0.8V

If the temperature is increased from 0 ^oC to 30 ^oC at a constant pressure of gas having fixed mass, then the ratio of initial and final volume will be?

• 91:101

• 91:100

• 91:111

• 91:121

At 22 degree Celsius a gas consists of pressure 1.1 bars then what is the temperature when the gas consists a pressure of 2.2 bars?

• 11 degree celsius

• 44 degree celsius

• 33 degree celsius

• 22 degree celsius

In Avogadro's law, volume is directly proportional to

• pressure

• number of moles

• temperature

• volume

If the pressure of a certain amount of gas is increased by 2 times, at a fixed temperature, then its final volume will become ________.

• halved

• doubled

• one-fourth

• tripled