Tag: biology

Questions Related to biology

Which of the following factors can affect the water cycle?

management of water uses and limitations of dams air, water and soil management of natural resources biology

  1. Increase in the rate of evaporation

  2. Increase in rate of condensation

  3. Increase in the rate of collection of rain water

  4. Both A and B

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Correct Option: D

Which of the following steps should be taken for water harvesting?

management of water uses and limitations of dams air, water and soil management of natural resources biology

  1. Reduction in water loss.

  2. Avoid any damage to quality of water

  3. Improve water management practices

  4. All of the above

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Correct Option: D

The increase in temperature will increase which of the following process of the water cycle?

management of water uses and limitations of dams air, water and soil management of natural resources biology

  1. Evaporation

  2. Condensation

  3. Precipitation

  4. None of the above

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Correct Option: A

Find the odd one out.

management of water uses and limitations of dams air, water and soil management of natural resources biology

  1. Water cycle

  2. Oxygen cycle

  3. Phosphorus cycle

  4. Carbon cycle

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Correct Option: A

Alternatives to large dams does not exist.

management of water uses and limitations of dams air, water and soil management of natural resources biology

  1. True

  2. False

  3. Nither

  4. Either

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Correct Option: B
Explanation:
Dams play an important role for hydroelectricity power plants because electricity is produced from the energy of water which rotates the turbines and electricity is generated. However, construction of large dams requires a large space and manpower too. Many alternatives are there for electricity generation other than the hydroelectric power plants on dams. Solar energy and wind energy are great alternatives for this. Moreover, construction of large dams is expensive and therefore not economic. Dams also cause climatic changes because the reservoirs in hydroelectric power plants emit greenhouse gases.
Hence, the statement given in the question is incorrect. 
So, the correct answer is 'False'.

Check dams are build along seasonal flooded gullies for water harvesting.

management of water uses and limitations of dams air, water and soil management of natural resources biology

  1. True

  2. False

  3. Nither

  4. Either

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Correct Option: A
Explanation:
A check dam is a small dam which may be temporarily or permanently constructed across a gully, a draining ditch or channel so as to slow down the speed of concentrated flows. These dams are made for harvesting water and preserving natural water of rain. Hence, these dams are made in seasonal times generally when there is heavy rainfall. The stored water then can be used for various purposes.
Hence, the statement given in the question is correct.
So, the correct answer is 'True'.

The controversial dam across the river Narmada?

management of water uses and limitations of dams air, water and soil management of natural resources biology

  1. Sardar Sarovar

  2. Hirakud

  3. Bhakranangal

  4. Sutlej

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Correct Option: A

The barrier that impounds water stream is called as

management of water uses and limitations of dams air, water and soil management of natural resources biology

  1. Rainwater harvesting system

  2. Dam

  3. Tank

  4. None of the above

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Correct Option: B

Efficient water harvesting may lead to 

management of water uses and limitations of dams air, water and soil management of natural resources biology

  1. Better irrigation facility

  2. Reduction in wastage of water

  3. Reduction of water scarcity

  4. All of the above

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Correct Option: D

The collection of rainwater in the storage tank for reuse can be termed as

management of water uses and limitations of dams air, water and soil management of natural resources biology

  1. Water harvesting

  2. Potable water

  3. Water pollution

  4. All of the above

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Correct Option: A
Explanation:

Rainwater harvesting reuse of water. The term 'rainwater harvesting' refers to the collection of precipitation running off roof surfaces into cisterns or other storage vessels. Storm water reuse refers to the collection of runoff from catchment surfaces (e.g. roads, parking lots and landscaped areas).

So, the correct answer is 'Water harvesting'