Tag: receding water table

Questions Related to receding water table

The component of rainwater harvesting system is

social science water a precious resource water resources and conservation receding water table water conservation and irrigation

  1. Conduits

  2. Dam

  3. Lake

  4. None of the above

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Correct Option: A
Explanation:
  • Rainwater harvesting is the collection and storage of rainwater for reuse on-site, rather than allowing it to run off. These stored waters are used for various purposes such as gardening, irrigation, etc.
  • The components of the rainwater harvesting system include  Catchments, Coarse mesh, Gutters, Conduits, First-flushing,  Filter, Storage facility.
  • Conduits are pipelines or drains that carry rainwater from the catchment or rooftop area to the harvesting system. Conduits can be of any material like polyvinyl chloride (PVC) or galvanized iron (GI), materials that are commonly available.
  • Hence Conduits are the component of the rainwater harvesting system.
  • So, the correct answer is 'Conduits'.

Identify the types of rainwater harvesting method.

social science water a precious resource water resources and conservation receding water table water conservation and irrigation

  1. Roof top

  2. Run off

  3. Dam

  4. Both A and B

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Correct Option: D
Explanation:
  • Rainwater harvesting is the collection and storage of rainwater for reuse on-site, rather than allowing it to run off. 
  •  These stored waters are used for various purposes such as gardening, irrigation, etc.
  • Broadly there are two ways of harvesting rainwater. They are Surface runoff harvesting and Rooftop rainwater harvesting.
  • Hence Rooftop and runoff are the types of rainwater harvesting methods.
  • So, the correct answer is 'Both A and B'.

Tertiary consumers in ponds, feed on

social science water a precious resource water resources and conservation receding water table water conservation and irrigation

  1. Big fishes

  2. Plants

  3. Planktons

  4. Decomposers

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Correct Option: A

Water contains impurities during

social science water a precious resource water resources and conservation receding water table water conservation and irrigation

  1. Evapo-transpiration

  2. Condensation

  3. Transpiration

  4. Filtration

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Correct Option: B

Water scarcity is caused due to:

chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

  1. population growth

  2. water cycle

  3. non-melting of snow

  4. rain fall

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Correct Option: A
Explanation:

The population is a major cause of water shortage. Water is polluted when industrial wastes are deposited into water bodies thus making it unfit for human consumption. Thus there is a need for water security.

Under or non-availability of usable water is called:

chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

  1. purification of water

  2. pollution of water

  3. rationing of water

  4. scarcity of water

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Correct Option: D
Explanation:

Scarcity of water is the under or non-availability of usable water. This water presence in the ground is very less and this may sometimes lead to draughts.

Which of the following techniques are used for rainwater harvesting?

chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

  1. Rooftop rainwater harvesting

  2. Water is allowed to go into the ground directly from the roadside drains that collect rainwater.

  3. Both of the above

  4. None of the above

Show answer
Correct Option: C
Explanation:

The following techniques are used for rainwater harvesting
 (1) Rooftop rainwater harvesting: The rainwater is collected from the rooftop to a storage tank, through pipes.
(2) Water is allowed to go into the ground directly from the roadside drains that collect rainwater.

Why it is very important that water is used carefully?

chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

  1. To avoid shortage of water.

  2. To save cost as water is expensive.

  3. Excess usage of water is not ethical.

  4. All of the above.

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Correct Option: A
Explanation:

There is shortage of water in many parts of the world. Hence, it is very important that water is used carefully to avoid shortage of water.

What is rainwater harvesting?

chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

  1. collecting, storing and distributing rainwater

  2. seeding in clouds

  3. distribution of stored water

  4. water supply

Show answer
Correct Option: A
Explanation:

Rainwater harvesting is the process of collection of rainwater from surfaces on which rain falls, filtering it and storing it for multiple uses  'OR' the method of collecting, storing and distributing rainwater for different uses. 

The collected water can be stored for direct use or it can be diverted for groundwater recharge.

Which of the following is true about Rooftop rainwater harvesting?

chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

  1. The rainwater is collected from the rooftop to a storage tank, through pipes.

  2. This water may contain soil from the roof and need filtering before it is used.

  3. Instead of collecting rainwater in the tank, the pipes can go directly into a pit in the ground.

  4. All of the above.

Show answer
Correct Option: D
Explanation:

Following are true about Rooftop rainwater harvesting:
1) The rainwater is collected from the rooftop to a storage tank, through pipes.
2) This water may contain soil from the roof and need filtering before it is used.
3) Instead of collecting rainwater in the tank, the pipes can go directly into a pit in the ground.