In which year it was discovered that diffusion rate depends upon
mass ?
a) 1893
b) 1833
c) 1933
d) 1932
Thomas Graham was …………… chemist.
a) English
b) Italian
c) Russian
d) German
The escape of gas molecules from a hole one by one without collision is called ………….
a) effusion
b) diffusion
c) pressure
d) osmosis
We can smell onions even when packed in a sealed bag due to ……….
a) effusion
b) diffusion
c) expansion
d) evaporation
Gas filled balloon floating up in the room comes down after a day or two due to ……
a) effusion
b) diffusion
c) expansion
d) evaporation
Force exerted by a gas on per unit area is called…………..
a) friction
b) density
c) compressibility
d) pressure
