Tag: water conservation and irrigation

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Questions Related to water conservation and irrigation

Multiple choice biology natural resources and their conservation water resources and conservation receding water table water conservation and irrigation

It is estimated that in a few years from now more than _________ of the people in the world could face water scarcity.

  1. one half

  2. one third

  3. one fourth

  4. one fifth
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is estimated that in a few years from now more than one third of the people in the world could face water scarcity.

Multiple choice biology natural resources and their conservation water resources and conservation receding water table water conservation and irrigation

The amount of water recommended by the United Nations for drinking, washing, cooking and maintaining proper hygiene is a minimum of ........................ per person per day. This amount is about ................. buckets of water per person per day.

  1. 50 litres, two and a half

  2. 25 litres, two and a half

  3. 50 litres, one and a half

  4. 75 litres, three and a half
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The amount of water recommended by the United Nations for drinking, washing, cooking and maintaining proper hygiene is a minimum of 50 litres per person per day. This amount is about  two and a half buckets of water per person per day.

Multiple choice evs sources of water water resources and conservation receding water table water conservation and irrigation

Choose the correct answers from the alternatives given .
Which of the following is not a property of water that helps explain why water is so important to life on earth?

  1. Water expands when frozen

  2. Nonpolar compounds dissolve- well in water

  3. Water can absorb great quantities of heat with relatively-small increase in its temperature

  4. Water molecules attract each other
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Water is a polar solvent. Therefore, nonpolar compounds do not dissolve well in water. This is a property of water, but it is not a property that explains why water is important to life; rather, it is a limitation.

Multiple choice evs - i food for all improved methods of agriculture receding water table water conservation and irrigation

Fresh crop has more__________________

  1. Moisture

  2. Impurities

  3. Weed

  4. Stones
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • The fresh crop has more moisture. Hence, they should be dried in the sun to reduce moisture before storage because if freshly harvested grains are stored they may get spoilt or attacked by organisms.

Therefore, the correct answer is option A.

Multiple choice evs - i food for all improved methods of agriculture receding water table water conservation and irrigation cropping patterns whose forests?

Large scale storage of grains is done in _______________

  1. Plastic bags

  2. Silos

  3. Pouches

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Insects in stored grain can cause much damage. The farmer may lose up to a third of the stored grain. 
  • Large scale storage of grains is done in silos and granaries to protect them from pests like rats and insects.

Therefore, the correct answer is option B.

Multiple choice evs - i receding water table improved methods of agriculture water conservation and irrigation cropping patterns

Which system is a boon in regions of poor availability of water?

  1. Sprinkler system

  2. Rahat

  3. Drip system

  4. Dhekli
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • Drip irrigation is an irrigation method that saves water and fertilizer by allowing water to drip slowly to the roots of plants, either onto the soil surface or directly onto the root zone, through a network of valves, pipes, tubing, and emitters. 


Therefore, the correct answer is option C.

Multiple choice evs - i food for all improved methods of agriculture receding water table water conservation and irrigation

The modern method of irrigation is___________

  1. Sprinkler system

  2. Drip system

  3. Both A and B

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • The supply of water to the crops at different intervals is called irrigation. Lakes, rivers, dams, canals, etc. are the sources of water for irrigation.
  •  Various traditional ways of irrigation are pulley system, chain pump, dhekli, and Rahat. 
  • Traditional methods are cheaper but they are less efficient as compared to modern methods. The modern methods of irrigation include sprinkler systems, drip systems, etc. 
  • In the sprinkler system, water is sprinkled on the crop by using a pipe and nozzle system. It resembles raining. In the drip system, waterfalls drop by drop just at the position of the root.
Multiple choice evs - i food for all improved methods of agriculture receding water table water conservation and irrigation

Storage of food for longer duration should be prevented from_______________

  1. Humans

  2. Sand

  3. Rats

  4. Jute
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • The storage of food crops is an important step of agricultural practices. If the crop grains are to be kept for a longer time, they should be prevented from moisture, insects, rats, and microorganisms. 

Therefore, the correct answer is option C.