Tag: water in our life

Questions Related to water in our life

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'

Which of the following describes the effects of water scarcity on plants?

chemistry water in our life how can we conserve water? droughts, floods and water conservation conservation of water and its importance and methods

  1. The green character of the planet shall be lost.

  2. This may mean the end of all life.

  3. A world without plants shall mean no food, no oxygen, not enough rain, and innumerable other problems.

  4. All of the above

Show answer
Correct Option: D
Explanation:

The following describes the effects of water scarcity on plants. The green character of the planet shall be lost. This may mean the end of all life, for a world without plants shall mean no food, no oxygen, not enough rain, and innumerable other problems.

Careful management of water catchment areas results in:

chemistry water in our life how can we conserve water? droughts, floods and water conservation conservation of water and its importance and methods

  1. more wastage of water

  2. less wastage of water

  3. deforestation

  4. none of these

Show answer
Correct Option: B
Explanation:

Careful management of water catchment areas results in more use and less wastage of water.

 Careful management of water catchment leads to:

chemistry water in our life how can we conserve water? droughts, floods and water conservation conservation of water and its importance and methods

  1. emergency usage of water

  2. provides clean and fresh water

  3. decrease water requirement

  4. more wastage of water

Show answer
Correct Option: A
Explanation:

During the time of emergency when the water becomes scarce, stored water helps to meet the daily requirement. 

Which of the following does not show water shortage?

chemistry water in our life how can we conserve water? droughts, floods and water conservation conservation of water and its importance and methods

  1. Taps running dry

  2. Long queues for getting water 

  3. A family getting 3 buckets of water per person per day

  4. None of these

Show answer
Correct Option: C
Explanation:

Option C does not show water shortage as if every person in the family is getting 3 buckets of water per day then this shows they have enough water of each. Option A and B show water shortage.

Rain water harvesting is:

chemistry water in our life how can we conserve water? droughts, floods and water conservation conservation of water and its importance and methods

  1. storing ground water by not using water from the well

  2. stop growing crops to save water

  3. allowing water to go into rivers and lakes

  4. collecting rainwater and storing it for later use

Show answer
Correct Option: D
Explanation:

Rain water harvesting is collecting rainwater and storing it for later use. Its is a single method by which rainfall is collected for future usage. The collected rainwater may be stored, utilized in different ways or directly used for recharge purposes. It is the accumulation and storage of rainwater for re-use on site, rather than allowing it to run-off.

Situation which occurs due to occurrence of more rainfall than normal level or poor water distribution is :

chemistry water in our life how can we conserve water? droughts, floods and water conservation conservation of water and its importance and methods

  1. drought

  2. monsoon winds

  3. flood

  4. tropical rain

Show answer
Correct Option: C
Explanation:

  • Floods occurs due to occurrence of more rainfall than normal level or poor water distribution.
As more rainfall can result in accumulation of water and when there is poor distribution of water it overflows and causes floods.
  • Drought is a dry condition in which there is shortage of water so it can't be the situation.
  • And winds does not occur due to rain.
  • Tropical rain is normal level rain which occurs in a region which cannot cause this situation of flood. 

Which one of the following statements is not an argument in favor of multi-purpose river projects? 

chemistry water in our life how can we conserve water? droughts, floods and water conservation conservation of water and its importance and methods

  1. Multi-purpose projects bring water to those areas which suffer from water scarcity

  2. Multi-purpose projects by regulating water flow help to control floods

  3. Multi-purpose projects lead to large scale displacements and loss of livelihood

  4. Multi-purpose projects generate electricity for our industries and our homes

Show answer
Correct Option: C

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 %'