The main source of water for inland lakes are:
Snow
Sea water
Ground water
None of these
When hydrogen and oxygen combine to form water, they form
An unstable compound
A stable mixture
An unstable mixture
An extremely stable compound
Which of the following processes cannot take place in the absence of oxygen ?
Combustion
Respiration
Oxidation
All of these
Rain water harvesting is
Storing ground water by not using water from the well
Stop growing crops to save water
Allowing water to go into rivers and lakes
Collecting rainwater and storing it for later use
What happens to the water table of a place having droughts for a long period of time ?
It gets higher because of continuous evaporation
It gets lower because of continuous evaporation and flow
It remains the same because soil protects it from the heat
It gets replenished continuously
Crystallization of water occurs by
Freezing
Supercooling
Nucleation and crystal growth
All the above
Why is water scarcity increasing day by day?
Water cycle has stopped functioning
The total amount of water of water on earth has decreased
The amount of potable water is decreasing because of overusage
Due to increasing frequency of floods and droughts
Which of the following is potable water
A glass of water fit for drinking
Water in a pot
Water with bacteria and chemicals
Which of the following statement is true ?
The salinity of rivers increase with time
The salinity of rivers decrease with time
The salinity of seas increase with time
The salinity of seas decrease with time
In early winter mornings, we can see drops of water on the blades of grass. This is because of
Photosynthesis
Transpiration
Condensation
Water cycle
