Which statement is correct about gases ?
a) have indefinite shape
b) have indefinite volume
c) a & b both
d) none of these
In diffusion gas molecules move from a region of………….
a) higher to lower concentration
b) lower to higher concentration
c) no movement occurs
d) all of these
Gas molecules are in …………. motion.
a) random
b) liner
c) circular
d) all of these
The spontaneous mixing of the gas molecules to form homogenous mixture is called ………
a) effusion
b) diffusion
c) pressure
d) density
Explanation:The molecules move from a region of higher concentration to a region of lower concentration until the concentration becomes equal throughout. Liquid and gases undergo diffusion as the molecules are able to move randomly.
Rate of diffusion of gases ………..
a) varies
b) remains constant
c) both a & b
d) none of these
Lighter gases diffuse much quickly than heavier discovered by ………..
a) Robert
b) Thomas Jefferson
c) Thomas Graham
d) Rutherford
