Which of the following expand on heating and increase its pressure in the container:
a) gas
b) solid
c) liquid d) all of these
d) none of these
The given figure represent: PST
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a) chemical change
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
Soil is a mixture of………..
a) air
b) water
c) sand
d) all of these
