Tag: droughts, floods and water conservation

Quizzes (0) Questions (37)

Questions Related to droughts, floods and water conservation

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

Find out the wrong statement from the following:

  1. Water evaporates from plants, animals and oceans

  2. Animals living in the water are not harmed during floods

  3. There is no vegetation during draughts

  4. Water available for use is very limited
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Water evaporates from plants through transpiration and oceans through evaporation. There is no vegetation during draughts as there is no availability or very little presence of water in the ground making the area dry and cracks the ground.

Water available for use is very limited as most of the water present in the earth's surface is saline.

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

Rain water harvesting is a method employed to:

  1. stop soil erosion in a place

  2. raise the water table of a place

  3. increase afforestation around a place

  4. decrease floods and droughts in a place
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rain water harvesting is a method employed to raise the water table of the plane. 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.

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

Cloud seeding is a technique used to induce rain that was first used by USA in 1946. It has also been done in Karnataka and other places in India. What is it?

  1. An agricultural practice that depends on clouds

  2. Introduction of particles in clouds to decrease condensation

  3. Making clouds and placing them in the sky

  4. Trimming the clouds into seed like structures

  5. An process of spreading dry ice on upper part of cloud to simulate precipitation process and cause rain
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The process of spreading dry ice on upper part of cloud to simulate precipitation process and cause rain is known as cloud seeding.

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

What are the basic components of a rainwater harvesting and conservation system?

  1. Catchment areas

  2. Storage units

  3. Conveyance mechanism which transports the water falling

  4. Sloping roof
Reveal answer Fill a bubble to check yourself
A,B,C,D Correct answer
Explanation
Catchment areas: roof surface to collect the rain.
Conveyance: channels or pipes from roof or catchment area to storage.
Storage tanks: : cisterns or tanks where collected rainwater is securely stored  i.e. insect proof.
Sloping roof is falls in the category of catchment areas.

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

The method of rainwater harvesting which can be adopted by individual house owners is:

  1. construction of recharge trenches

  2. on channel storage of water

  3. creation of new water bodies

  4. roof-top rainwater harvesting
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Harvesting rain water from roof tops is an easy and eco- friendly method of augmenting house hold level water availability. Roof top rain water harvesting involves diverting and recharging or storing part of rain water that falls on the roof of a house.

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

To prevent excess use of water from taps and tanks, we can collect water from :

  1. rain

  2. streams

  3. rivers

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

To prevent excess use of water from taps and tanks, we can collect water from rain.

Because if we use the rain water by the help of rainwater harvesting technique the excess uses of water from tanks and taps which is supplied by government can be prevented.

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

The efficiency of drip irrigation is around: 

  1. 40%

  2. 85%

  3. 20%

  4. 100%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Drip irrigation is one of the most efficient methods of irrigation. It supplies one drop at a time through small emitters. Thus it does not have little water runoff and very less water is lost during spraying. Thus its efficiency ranges from $80$% to $90$%

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

Higher level of floods and droughts are led by :

  1. sand storms

  2. lower precipitation

  3. higher precipitation

  4. none of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A higher level of floods caused by higher precipitation means heavy rainfall.

Which can't be caused by a little rainfall or sand storms as sand storms cause a thunderstorm.   

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

If the irrigation water contains dissolved salts, _____________ is particularly suitable.

  1. surface irrigation

  2. drip irrigation

  3. sprinkler irrigation

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

Drip irrigation is a type of micro-irrigation system that has the potential to save water and nutrients by allowing water to drip slowly to the roots of plants either from above the soil surface (or) buried below the surface. The goal is to place water directly into the root zone, minimize evaporation to reduce the wastage of minerals.


Thus, drip irrigation is suitable for the irrigation water which contains dissolved salts.

Hence, the correct option is $\text{B}$

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

Rainwater can be used to recharge the groundwater. This is referred to as:

  1. Infiltration

  2. water harvesting

  3. rainwater harvesting
  4. both $B$ and $C$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rainwater can be used to recharge the groundwater. This is referred to as water harvesting and rainwater harvesting.