Tag: uses of water

Questions Related to uses of water

Pick the correct statement.
I. The estuaries are semi-enclosed coastal body of water, which has a free connection with the open sea.
II. Estuaries may be considered as ecotones between the fresh and marine habitats.
Ill. The Estuaries are salt water lakes.
IV. The estuaries are fresh water lakes.

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

  1. I and II are correct.

  2. II and III are correct.

  3. III and IV are correct.

  4. I, II and III are correct.

Show answer
Correct Option: A
Explanation:

Estuaries are unique plant and animal communities that have adapted to brackish water mixture of fresh water draining from the land and salty seawater. However, there are also several types of entirely freshwater ecosystems that have many similar characteristics to the traditional brackish estuaries. Estuaries may be considered as ecotones between the fresh and marine habitats.

Residence time of water in the atmosphere is

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

  1. 10 days

  2. 20 days

  3. 28 days

  4. 35 days

Show answer
Correct Option: A
Explanation:
Residence time is defined as the amount time a fluid, example water spends in a particular area/space. The residence time of the water is estimated at 10 days in the atmosphere.  
So, the correct answer '10 days'

Percentage of water present in oceans and seas is

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

  1. 60 %

  2. 70 %

  3. 80 %

  4. 95 %

Show answer
Correct Option: D
Explanation:

Around 71% of earths surface is covered with water, oceans and seas contain maximum amount which is around 96.5%

So, the correct answer is '95 %'

Part of earth covered by water is about :

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

  1. 71%

  2. 50%

  3. 92%

  4. 87%

Show answer
Correct Option: A
Explanation:

About 71% of earths surface is covered by water & about 96% of water is present in oceans

So, the correct answer is '71%'

Water occurs in frozen state over the land is

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

  1. 0.75%

  2. 1.97%

  3. 2.1%

  4. 2.5%

Show answer
Correct Option: B
Explanation:
  • 70% of the Earth's surface is water. Of this 70%, 98% is salt water, leaving 2% as fresh water. Of the 2% that is fresh, about 90% is frozen(i.e 1.97%of the total water). This frozen water is locked up in the Antarctic ice sheets and glaciers on the Alps, etc.
  • Hence Water occurs in the frozen state over the land is 1.97%.
  • So, the correct answer is '1.97%'.

Why is water scarcity increasing day by day?

chemistry water: a natural resource where do we get water from? why conserve water uses of water

  1. Water cycle has stopped functioning.

  2. The total amount of water on earth has decreased.

  3. The amount of potable water is decreasing because of over usage.

  4. Due to increasing frequency of floods and droughts.

Show answer
Correct Option: C
Explanation:

The amount of potable water is decreasing because of over usage. Water scarcity is the lack of sufficient available water resources to meet the demands of water usage within a region.

Which of the following does not show water shortage?

chemistry water: a natural resource where do we get water from? why conserve water uses of water

  1. Taps running dry

  2. Long queues for getting water

  3. Marches and protests for demand of water

  4. A family gets three buckets of water per person per day

Show answer
Correct Option: D
Explanation:

Water shortage is the lack of sufficient available water resources to meet the demands of water usage within a region.
There seems no water shortage as three buckets of water per person is enough for satisfying their daily needs.

The amount of water on earth today compared with the amount of water on earth at the time it was formed about 5 billion years ago is :

chemistry water: a natural resource where do we get water from? why conserve water uses of water

  1. The same amount

  2. About 80 per cent of the original amount

  3. About 50 per cent of what is was originally

  4. Cant say

Show answer
Correct Option: C
Explanation:

The amount of water on earth today compared with the amount of water on earth at the time it was formed about $5$ billion years ago is about $50$ per cent of what it was originally.

Which of the following factor/(s) are leading to shortage of water?

chemistry water: a natural resource where do we get water from? why conserve water uses of water

  1. The demand for water is increasing day-by-day.

  2. The number of people using water is increasing with rising population.

  3. More and more water is being used for producing food and by the industries.

  4. All of the above.

Show answer
Correct Option: D
Explanation:

All of the following factors are leading to shortage of water.

(1) The demand for water is increasing day-by-day.
(2) The number of people using water is increasing with rising population.  In many cities, long queues for collection of water are a common site.
(3) More and more water is being used for producing food and by the  industries.

Water shortage is a problem faced only by people living in rural ares.

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

  1. True

  2. False

Show answer
Correct Option: B
Explanation:
  • Water shortage is a problem faced only by people living in rural areas because water problem is faced by all people rural as well as urban but urban areas face water problem more because the water used in urban areas is more.
  • Hence Water shortage is a problem faced only by people living in rural areas is a False statement.