Aquifers

Q.

Explain the technique behind rooftop rainwater harvesting. [5 MARKS]

Q.

Household waste is also called as ___________.

1. Carriage

2. Garbage

3. Montage

4. Garage

Q. What are aquifers?

Q. The process of collecting rain water in huge, cemented pits is called:

1. filtration of water.
2. storing of water.
3. transportation of water.
4. rain water harvesting.

Q. Which of the following can cause contamination of an aquifer?

1. Excavation and mining
2. Excessive use of fertilisers
3. Building bawris
4. Septic tank leakage

Q. A result of pumping water from aquifers is that

1. farms produce fewer crops.
2. the recharge zone shrinks
3. the aquifer gets depleted
4. groundwater stops getting collected

Q. Rainwater harvesting is a method of:

1. collecting rainwater and directing into ground.
2. using rainwater for daily purpose.
3. treating water by passing oxygen gas.
4. producing water for future use.

Q. _______ is an underground reservoir inside the rocks.

1. Pond
2. Aquifer
3. Lake
4. Glacier

Q. ________ is the major source of fresh water.

1. Groundwater
2. Sea-water
3. None of the above
4. Lake

Q.

There is a source of water that we do not see but it is the primary source of many lakes, ponds etc. What type of water is being referred to?

1. Rain Water

2. Sea water

3. Lake Water

4. Ground Water

Q. What is rainwater harvesting?

1. Storing ground water present in wells.
   
2. The seeping of water into the ground
   
3. Collecting rainwater and storing it for future use
4. Stopping the cultivation of crops to save water
   

Q. Why is water present underground?

Q. Aquifers are a renewable source of freshwater.

1. True
2. False

Q. Aquifer is a source of groundwater.

1. False
2. True

Q. Which amongst the following can be best described as 'huge storehouses of groundwater'?

1. Bawris
2. Aquifers
3. Septic tanks
4. Aquariums

Q. Name some of the sources of domestic waste.

Q.

The average depth of the water table in a particular city is found to be 200m. What should be the depth of the borewell in order to fetch ground water?

1. Does not depend on the depth of water table

2. Less than 200m

3. Greater than 200m

4. Can’t be said

Q. Define rainwater harvesting.

Q. Rainwater harvesting can be done by:

1. collecting water by keeping a small container on the top of the building
2. collecting rainwater from the rooftop to a storage tank, through pipes
3. allowing water to go into the ground directly from the roadside drains that collect rainwater
4. none of the above

Q. Is water a renewable or a non-renewable resource? Justify your answer.

Q.

Which of the following are the alternate arrangements for sewage disposal?

1. Septic tanks

2. Chemical toilets

3. Composting pits

4. Manholes