Answer: Option A. -> True
:
A

The amount of usable water on earth is limited as not all sources of water give usable water. Water present in oceans is too salty, much of the water is frozen in form of mountainous and polar glaciers. So, only a small portion is available for use.

Answer: Option B. -> False
:
B

The given statement is false.
The process of evaporation of water from plant leaves is called transpiration. Transpiration is also partially responsible for pulling the water up from root through shoot.

 

Answer: Option B. -> Water is recycled through a natural phenomenon
:
B
The amount of water on the earth remains almost constant due to the water cycle. The water cycle is a natural continuous process due to which water is circulated from oceans and other water bodies to the atmosphere due to evaporation. The water vapours then undergo condensation and form clouds. Then the water re-enters the land in the form of rain (precipitation), and also flows back to oceans through rivers. This cycle keeps fresh water available for use of all living beings.

Answer: Option B. -> Liquid
:
A, B, and C
Pure water is tasteless, odourless, and colourless. Water can occur in three states: solid (ice), liquid, or gas (vapour).
Solid water—ice is frozen form of water. 
Liquid water is the form of water with which we are most familiar. We use liquid water in many ways, including washing and drinking.
Water as a gas — vapour is always present in the air around us. We cannot see it. When we boil water, the water changes from a liquid to gas or water vapour.

Answer: Option C. -> A – Evaporation, B – Condensation, C – Precipitation
:
C
Given picture represents water cycle in the environment. It is clear from the picture that the water is getting evaporated due to sunlight and when the water vapour rises up, it condenses and form clouds, which later results in rainfall.

Answer: Option A. -> True
:
A
Rain water harvesting is a technique of collection and storage of rainwater for future use. The rain water which is harvested is helpful in recharging the groundwater level. 

Answer: Option A. -> True
:
A

When water vapour present in the atmosphere comes in contact with the surface of a cold water glass, the vapour loses heat and condensation happens. Rainfall also happens due to condensation of water followed by precipitation. Hence, the given statement is true.

Answer: Option C. -> evaporation and transpiration
:
C

Water vapour enters the atmosphere due to evaporation from water bodies like lakes, oceans, rivers, transpiration from plants, etc. Transpiration is itself a special kind of evaporation which happens through the pores of plant leaves.

Answer: Option A. -> evaporation of water followed by condensation
:
A

Water evaporates from the surface of rivers, oceans, lakes.
Warm air rises up taking water vapour with it. As it goes up, it loses heat and the amount of water vapour air can hold decreases. This causes condensation of water and clouds are formed as bulks of suspended water droplets. These tiny water droplets appear as rain.

Answer: Option B. -> False
:
B
Both excessive rain and lack of rain are harmful for agriculture. Lack of rain causes drought and the availability of water is reduced. Excessive rain causes flooding which is equally disastrous.