Chemistry · Some Basic Concepts of Chemistry

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Two volumes of hydrogen combine with one volume of oxygen to give two volumes of water vapour at constant temperature and pressure. Reason (R): Equal volumes of all gases at the same temperature and pressure contain an equal number of molecules. In the light of the above statements, choose the correct answer from the options given below:

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.