The density of most of the…………increases with decrease in temperature.
a) solid
b) liquid
c) both a & b
d) none of these
When water is called down below ……….. it’s density decreases.
a) 2 0C
b) 30C
c) 40C
d) 50C
At ……… the density of water becomes 0.91g/m3.
a) 00C
b) 10C
c) 20C
d) 30C
Ice is ……… and therefore floats on the surface of water.
a) lighter
b) heavier
c) both a & b
d) none of these
The expansion of ice is due to formation of ……….structure.
a) octagonal
b) hexagonal
c) pentagonal
d) heptagonal
In ice,..…water molecules arrange themselves in the form of a ring having empty spaces.
a) 4
b) 5
c) 6
d) 7
