Ice floats on water because
ice is heavier than water
ice is cooler than water
ice is lighter than water
ice is a solid
The density of water is:
0.5 g/cm3
0.1 g/cm3
10 g/cm3
1 g/cm3
Our body temperature is maintained at:
20oC
41oC
37oC
11oC
When water is cooled it contracts until it reaches ______ and then it starts expanding.
40oC
0oC
4oC
Water is an extremely stable:
atom
element
mixture
compound
Metals react with water to form:
oxides and hydroxides
oxides and chlorides
hydroxides and carbonates
oxides and sulphides
The melting point of ice is:
32oC
100oC
Which of the following does not cause a depletion in the water table of a place?
Constructing factories and houses
Making concrete roads and floors
Deforestation
All of these
To lower the freezing point of water _______ is added.
sand
salt
sugar
sawdust
Water is a _______ oxide.
acidic
neutral
basic
amphoteric
