Question

Assertion : For an ideal gas, at constant temperature, the product of the pressure and volume is constant.

Reason : The mean square velocity of the molecules is inversely proportional to mass

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

Correct option  (b) Both A and R are true but R is not correct explanation of A

Explanation:

The ideal gas equation is

PV = nRT; where P = pressure, V = volume;

T = temperature, R = universal gas constant,

n = no. of moles

Now, if T= constant, Then PV = constant