Question

Q 79. The gas law which relates the volume of the gas to the number of molecules of the gas is:

• A. Avogadro's law
• B. Gay-Lussac's law
• C. Boyle's law
• D. Charle's law

Answer 1

The correct option is A

Avogadro's law

Option a is correct.

• . Avogadro law is an experimental gas law relating the volume of a gas to the amount of substance of gas present. The law is a specific case of the ideal gas law.

Option b incorrect:

• Gay-Lussac’s law implies that the ratio of the initial pressure and temperature is equal to the ratio of the final pressure and temperature for a gas of a fixed mass kept at a constant volume. So option b is incorrect.

Option c is incorrect

• Boyle's law is a law stating that the pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature. So option c is incorrect.

Option d is incorrect

• Charle's law is a law stating that the volume of an ideal gas at constant pressure is directly proportional to the absolute temperature. So option d is incorrect.