Tag: why conserve water

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

  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.
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

Residence time of water in the atmosphere is

  1. 10 days

  2. 20 days

  3. 28 days

  4. 35 days
Reveal answer Fill a bubble to check yourself
A Correct answer
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'
Multiple choice evs water in our life where do we get water from? why conserve water uses of water

Water occurs in frozen state over the land is

  1. 0.75%

  2. 1.97%

  3. 2.1%

  4. 2.5%
Reveal answer Fill a bubble to check yourself
B Correct answer
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%'.
Multiple choice chemistry water: a natural resource where do we get water from? why conserve water uses of water

Why is water scarcity increasing day by day?

  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.
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

Which of the following does not show water shortage?

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

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 :

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

Which of the following factor/(s) 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.

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

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

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

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
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.