Which of the following expand on heating and increase its pressure in the container:
a) gas
b) solid
c) liquid
d) all of these
The given figure represent: PST ----P-6------2016
b) different state of matter
c) water purification
d) different type of chemical
The state of matter that freezes on cooling and change into solid state:
a) gas
b) liquid
c) solid
d) none of these
Soil is a mixture of………..
a) air
b) water
c) sand
d) all of these
