Tag: evs

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Questions Related to evs

Multiple choice evs water in our life where do we get water from? why conserve water uses of water

How much percentage of fresh water is present in the world?

  1. 97.5

  2. 2.5

  3. 30

  4. 40
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

About 97.5% of the water available on earth is found in seas and oceans as saline water and is not available to us for use directly. Only 2.5% of the total water resources of the world consist of fresh water. Majority of it is frozen in the ice caps at the two poles and on snow-covered mountains. Only limited amount of fresh water is available to us as a renewable resource through water cycle but its distribution is uneven. So, the correct answer is '2.5'.

Multiple choice evs water in our life where do we get water from? why conserve water uses of water

Water is a resource

  1. Degradable maintainable

  2. Non-degradable maintainable

  3. Renewable

  4. Non-renewable
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Water is a renewable resource which can be replenished due to the activity of rainfall. The resource can be degraded due to the addition of the pollutants from the sources like industries, domestic, agricultural, etc. The wastes which are added to the water bodies can be cleaned using the help of microbes in the treatment plants. So, water resource is degradable but the purity of the water can be maintained. 

Thus, the correct answer is option A. 

Multiple choice evs water in our life where do we get water from? why conserve water uses of water

Which pH range is most conducive for fresh water plants and animals?

  1. 2.0 -3.5

  2. 3.5 -5.0

  3. 6.5 -7.5

  4. 8-9
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Most fresh water organisms thrive in a near-neutral pH range, typically between 6.5 and 7.5. Values significantly lower (acidic) or higher (alkaline) can be harmful to aquatic life.

Multiple choice evs water in our life where do we get water from? why conserve water uses of water

Nearly 76% fresh water is confined in

  1. Ice caps and glaciers

  2. Soil water

  3. Ground water

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

Groundwater is formed by rainwater that accumulates below the soil levels. This forms the water table below the soil. Around 76% of the freshwater source is groundwater. Apart from this, it is also present in ponds, lakes glaciers etc.

Multiple choice evs water in our life where do we get water from? why conserve water uses of water

Out of total water content, sea constitutes

  1. 97.5%

  2. 71%

  3. 81%

  4. 91.2%
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Earth is made up of 70% water and the remaining is land. This water is present in the oceans, frozen icecaps and glaciers, groundwater water and lakes, rivers and ponds. Oceans and seas hold 97.5% of all the available water on earth. Thus the correct answer is option is A.

Multiple choice evs water in our life where do we get water from? why conserve water uses of water

The amount of freshwater of the Earth frozen as polar or glacial ice is

  1. 0.5%

  2. 0.02%

  3. 0.01%

  4. 1.97%

  5. 2.5%
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The oceans hold 97 percent of the Earth's water, the remaining three percent is the fresh water found in glaciers and ice below the ground or in rivers and lakes. Of the three percent that is not in oceans, 69 percent is locked up in glaciers and ice caps. The 69 percent of 3 percent is roughly 2 percent of the total fresh water available on the Earth's surface. This much fresh water is locked up in glaciers as ice and snow. About 90 percent of frozen water is in Antarctica and Green land.

Therefore, the correct answer is option D.

Multiple choice evs water in our life where do we get water from? why conserve water uses of water

Which of the following is one of the ten most endangered river in the world?

  1. Ganga

  2. Yamuna

  3. Mahanadi

  4. Krishna
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
 Ganges is considered to be one of the ten most endangered rivers in the world. Ganges is likely to dry up partly or fully due to climate change, excessive extraction of water, pollution, etc.
So, the correct answer is 'Ganga'
Multiple choice evs water in our life where do we get water from? why conserve water uses of water

Out of the total at any time, water present in the atmosphere is

  1. 0.01%

  2. 0.02%

  3. 0.001%

  4. 0.005%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • In the atmosphere, water exists as a gas (water vapor from evaporation), as a liquid (droplets of rain and liquid water that coats solid particles), and as a solid (snow and ice).
  • The water in the atmosphere makes up only a very small percentage of the total water on Earth i.e 0.001%.
  • Hence Out of the total at any time, water present in the atmosphere is 0.001%.
  • So, the correct answer is '0.001%'.
Multiple choice evs water in our life where do we get water from? why conserve water uses of water

Percentage of fresh water in the hydrosphere is

  1. 2.5%

  2. 30%

  3. 13%

  4. 33%
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Percentage of fresh water in the hydrosphere is 2.5%. Out of this, about 68% of the fresh water is found in icecaps and glaciers and about 30% is found in ground water. About 98.5% of water in the hydrosphere is salt water.

Thus, the correct answer is '2.5%.'