Tag: water in our life

Questions Related to water in our life

Find out the wrong statement from the following:

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

  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

Show answer
Correct Option: B
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.

Rain water harvesting is a method employed 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. 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

Show answer
Correct Option: B
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.

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?

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

  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

Show answer
Correct Option: E
Explanation:

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

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

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

  1. Catchment areas

  2. Storage units

  3. Conveyance mechanism which transports the water falling

  4. Sloping roof

Show answer
Correct Option: A,B,C,D
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.

The method of rainwater harvesting which can be adopted by individual house owners 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. construction of recharge trenches

  2. on channel storage of water

  3. creation of new water bodies

  4. roof-top rainwater harvesting

Show answer
Correct Option: D
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.

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

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

  1. rain

  2. streams

  3. rivers

  4. sea

Show answer
Correct Option: A
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.

The efficiency of drip irrigation is around: 

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

  1. 40%

  2. 85%

  3. 20%

  4. 100%

Show answer
Correct Option: B
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 $90$%

Higher level of floods and droughts are led by :

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

  1. sand storms

  2. lower precipitation

  3. higher precipitation

  4. none of the above

Show answer
Correct Option: C
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.   

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

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

  1. surface irrigation

  2. drip irrigation

  3. sprinkler irrigation

  4. localized irrigation

Show answer
Correct Option: B
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 $\text{B}$

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

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

  1. Infiltration

  2. water harvesting

  3. rainwater harvesting

  4. both $B$ and $C$

Show answer
Correct Option: D
Explanation:

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