Tag: chemistry

Questions Related to chemistry

Situation in which there is less water availability for agricultural purposes and no enough food in an area to feed people is called :

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

  1. flood

  2. monsoon

  3. drought

  4. monsoon winds

Show answer
Correct Option: C
Explanation:
A flood is an overflow of water that submerges land that is usually dry. Usually, the term monsoon is used to refer to the rainy phase of a seasonally changing pattern, although technically there is also a dry phase.
 A drought is a period of below-average precipitation in a given region, resulting in prolonged shortages in the water supply, whether atmospheric, surface water or ground water.
 An interchange of air between the land and oceans due to unequal heating and cooling of continents and oceans is known as monsoon winds.

Which of the following is responsible for higher level of floods and droughts?

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

  1. wind storms

  2. lower precipitation

  3. higher precipitation

  4. more wastage of water

Show answer
Correct Option: C
Explanation:

A Higher level of floods and droughts are due to higher precipitation.A drought is a particular period of below-average precipitation in a given region, which  results in prolonged shortages in its water supply, whether surface water, atmospheric water, or ground water.

Which of the following is/are a way/(s) of water conservation?

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

  1. One way of increasing the availability of water is to collect rainwater and store it for later use.

  2. One way of increasing the availability of water is to collect rainwater when it is required for use.

  3. Both of the above

  4. None of the above.

Show answer
Correct Option: A
Explanation:

The following is a way of water conservation. Collect rainwater and store it for later use.  It increases the availability of water.

Explain the effect 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. In the scarcity of water,the plants become dry and die.

  2. In the scarcity of water,the plants shrink but not die.

  3. In the scarcity of water,the plants become dry and hard.

  4. None of these.

Show answer
Correct Option: A

Rainwater harvesting is collecting & storing rainwater, which includes activities aimed at:

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

  1. harvesting surface water

  2. groundwater

  3. prevention of losses through evaporation and seepage

  4. all of the above

Show answer
Correct Option: D
Explanation:

In general, water harvesting is the activity of direct collection of rainwater. The rainwater collected can be stored for direct use or can be recharged into the ground water. Rain is the first form of water that we know in the hydrological cycle, hence is a primary source of water for us.It is also the infiltration of surface water into subsurface aquifers (before it is lost as surface runoff). 

Which one of the following is a sign of water scarcity?

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

  1. Dried fields having cracks on them

  2. Nutrient deficient plants

  3. Struggle to obtain water from bore wells

  4. All of the above

Show answer
Correct Option: D
Explanation:
  • Water scarcity is the lack of fresh water resources to meet water demand. It is mainly due to lack of water or due to a lack of adequate machinery or tools to supply water.
  • The effects of water scarcity can be grouped into these 4 broad categories. They are Health, Hunger, Education, and Poverty.
  • The sign of water scarcity includes the following. They are Dried fields having cracks on them, Nutrient deficient plants and Struggle to obtain water from bore wells.
  • So, the correct answer is 'All of the above'.

Water harvesting is done by ____________ processes.

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

  1. rainwater

  2. groundwater

  3. both A and B

  4. atmospheric water

Show answer
Correct Option: C
Explanation:
Water Harvesting
It means storing rain where it falls or storing the run off in your own village or town. And taking measures to keep that water clean by not allowing polluting activities to take place in our locality.
It can be done by two major processes:
1. Rainwater harvesting
It is a method of collection and storage of rainwater into natural reservoirs or tanks, or the infiltration of surface water into subsurface aquifers.
2. Groundwater harvesting 
Groundwater harvesting is a method to save water placed under the ground to control the groundwater flow in an aquifer, and to raise water table.

Cloud seeding is a technique used, to induce rain that was first used by the 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 increase condensation

  3. Making clouds and placing them in the sky.

  4. Trimming the clouds into seed like structures

Show answer
Correct Option: B
Explanation:

During rainfall, water droplets condense onto one another, causing the droplets to grow. When these water droplets get too heavy to stay suspended in the cloud, they fall to earth as rain.


In 1946, USA developed a technique called cloud seeding, in which they increase the process of condensation by introducing particles in the cloud. With the increase in condensation, droplets start forming at faster rate and hence, increase the rainfall. 

Which of the following will be an advantage of inter-linking the rivers in India?

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

  1. Lot of people will be displaced

  2. Floods will take place uniformly throughout the country

  3. Surplus water will be distributed uniformly

  4. The cost of implementain will be very high

Show answer
Correct Option: C
Explanation:
Surplus water will be distributed uniformly. The Indian rivers inter-link is a proposed large scale civil engineering project that aims to effectively manage water resources in India by linking Indian rivers and tunnels and so reduce persistent floods in some parts and water shortage in other parts of India.

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.