Rate of diffusion is directly proportional to the square root of molecular mass of substance.

STATEMENT-1 : 1//4^(th) of the initial mole of the air is expelled, if air present in an open vessel is heated from 27^(@)C to 127^(@)C . STATEMENT-2 : Rate of diffusion of a gas is inversely proportional to the square root of its molecular mass.

Statement-1. Ammonia has lower molecular mass than N_(2) . Statement-2. At a given temperature te rate of diffusion is inversely proportional to the square root of its density.

The rate of diffusion of a gas is………….proportional to both ……….. And square root of molecular mass.

The rate of diffusion of a gas is proportional to

Density of all the nuclei is same. Radius of nucleus is directly proportional to the cube root of mass number.

Assertion: A lighter gas diffuses more rapidly than heavier gas. Reason: At a given temperature and pressure, the rate of diffusion of a gas is inversely proportional to the square root of its density.

Assertion : Sound would travel faster on a not summer day than on a cold winter day, Reason : Velocity of sound is directly proportional to the square root of its aboslute temperature.

Two bodies of different masses are dropped simultaneously from same height. If air friction acting on them is directly proportional to the square of their mass, then,

The total energy of a particle executing SHM is directly proportional to the square of the following quantity.

A particular substance is being cooled by a stream of cold air (temperature of the air is constant and is 5^(@)C ) where rate of cooling is directly proportional to square of difference of temperature of the substance and the air. If the substance is cooled from 40^(@)C to 30^(@)C in 15 min and temperature after 1 hour is T^(@)C, then find the value of [T]//2, where [.] represents the greatest integer function.