Tag: receding water table

Quizzes (9) Questions (121)

Questions Related to receding water table

Multiple choice chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

When rainwater percolates into the cracks of RCC, it further gets weakened due to the:

  1. formation of $H _2CO _3$

  2. increase in pH value

  3. increase in the percentage of free lime

  4. exothermic hydration process
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Formation of $H _{2}CO _{3}$:

RCC contains $CaCO _{3}$ which when reacted with water forms carbonic acid which therefore gets weakened.
$CaCO _{3} + H _{2}O \rightarrow CaO + H _{2}CO _{3}$

Hence, the co0rrect option is $(A)$.

Multiple choice chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

Which of the following situations is classified as suffering from water scarcity?
(a) Region with high annual rainfall.
(b) Region having high annual rainfall and large population.
(c) Region having high annual rainfall but water is highly polluted.
(d) Region having low rainfall and low population. 

  1. a and b

  2. a and d

  3. c and d

  4. b and c
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Region having high annual rainfall and large population and  Region having high annual rainfall but water is highly polluted regions have high water scarcity problem because of high use of water tends to water pollution.Polluted water is unusable for humans.

Multiple choice chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

Where can rain water harvesting not be practised?

  1. Playground

  2. Rooftops

  3. Bathroom

  4. Can be used in all of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rainwater harvesting cannot be practiced in Bathroom as the bathroom is a closed area and the rain water cannot directly comes into it.

As all other are open area where rain water directly falls so there we can practice rainwater harvesting

Multiple choice chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

Where can Rain Water Harvesting be implemented?

  1. Homes

  2. Schools

  3. Any other space as long as there is a catchment area

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rainwater harvesting can be implanted in an open area where the rain falls directly.

so it  can be implanted in any space as long as there is a catchment area.
As it cannot be implanted in closed area so it cannot be implanted in homes and schools. 

Multiple choice chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

Which of the following increase the rate of percolation of rain water into the soil?

  1. Constructing check dams

  2. Vegetation and trees

  3. Overgrazing

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

Check dams are specifically designed to slow down the flow of runoff, which increases the time water spends on the soil surface, thereby significantly increasing the rate of percolation into the groundwater.

Multiple choice chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

Rain water harvesting is a method employed to:

  1. stop soil erosion

  2. raise the water table

  3. increase afforestation

  4. decrease floods and droughts

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rainwater harvesting is the accumulation and storage of rainwater for reuse on-site, rather than allowing it to run off. All the water was collected into a well and helps in raising water table.

Multiple choice chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

"Catch it where it falls" is the basic idea behind :

  1. making dams to store water

  2. recycling of water

  3. rain water harvesting

  4. condensation of water vapour
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

'Catch it where it falls'  is the basic idea behind the rain water harvesting. Rain water harvesting is the accumulation and storage of rain water for reuse on site rather than allowing it to run off.