MEDIUM
Earn 100

Water occupies space. Explain.

Important Questions on Natural Resources-Air,Water and Land

EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water
Water expands on reducing its temperature below _____ °C.
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Water
How much of the human body is water?
HARD
Science>Chemistry>Natural Resources-Air,Water and Land>Water
How is water important for functioning of bodies of living organisms like plants and animals?
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Water
One-third of the earth’s surface is covered with land.
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water
Why is water essential for us? Explain.
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Water

During summer, it is recommended that we eat more and more fruits like watermelon or vegetables like cucumber. Why?

EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water
Why does the earth appear blue from space?
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Water
What is water energy? How is it related to hydroelectricity?
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water
The human body is made up of mainly water.
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water

The liquid in which a substance is dissolved is called

EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water
All living things need water.
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water
Which of the following contains maximum quantity of water in it?
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water
When the temperature of a saturated solution is raised it:
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water
We can survive without water for at least a month.
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water

Give reasons.

Water is a very important constituent of our diet.

EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water
In what ways does your body lose water?
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Water
In what ways does your body gain water?
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water
Hydroelectricity is produced by the energy of _____.
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Water
During summers it is recommended that we eat more and more fruits like watermelon or vegetables like cucumber. Why?
 
HARD
Science>Chemistry>Natural Resources-Air,Water and Land>Water
Hard water is not available for an experiment. Some salts are given below:
(i) Sodium chloride                (ii) Sodium sulphate
(iii) Calcium chloride             (iv) Calcium sulphate
(v) Potassium chloride          (vi) Magnesium sulphate
Select from the following a group of these salts, each member of which may be dissolved in water to make it hard.