Tag: evs - i

Questions Related to evs - i

Causes of air pollution are:
i. Exhaust from automobiles
ii. Exhaust from factories and power plant
iii. CFCs
iv. Polythene

evs - i for a pollution free nature ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. i, ii, iii

  2. ii, iii, iv

  3. iii, iv, i

  4. i, ii, iv

Show answer
Correct Option: A
Explanation:

Causes of Air pollution are

  • Exhaust from automobiles
  • Exhaust from factories 
  • Power plant
  • CFCs.

Air pollution takes place in two different layers of the earth's atmosphere :_______.

evs - i for a pollution free nature ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. troposphere and stratosphere

  2. mesosphere and troposphere

  3. stratosphere and hydrosphere

  4. troposphere and hydrosphere

Show answer
Correct Option: A
Explanation:

Air pollution takes place in two different layers of the earth's atmosphere : troposphere and stratosphere.

Which gas is released by improper or incomplete combustion and are generally emitted from vehicles?

evs - i for a pollution free nature ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. $SO _2$

  2. $CO$

  3. $NO$

  4. $CO _2$

Show answer
Correct Option: B
Explanation:

Carbon Monoxide is formed by improper or incomplete combustion and is generally emitted from vehicles. 

Major pollutant of air is:

evs - i for a pollution free nature ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. $SO _2$

  2. $NO _2$

  3. both A and B

  4. $CFC$s

  5. all of the above

Show answer
Correct Option: E
Explanation:

$SO _2, \ NO _2 $ & $ CFC $, all cause air pollution.

Which of the following are the air pollutants?

evs - i the environment and us ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. Soot

  2. Smog

  3. CFCs

  4. All of the above

Show answer
Correct Option: D
Explanation:

Soot, Smog, CFCs are all air pollutants.

Which of the among is a major greenhouse gas implicated in global warming?

evs - i for a pollution free nature ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. $\displaystyle { CH } _{ 4 }$

  2. $\displaystyle { CO } _{ 2 }$

  3. $\displaystyle { NH } _{ 3 }$

  4. $\displaystyle { N } _{ 2 }$

  5. $\displaystyle { O } _{ 2 }$

Show answer
Correct Option: A
Explanation:

Option A is the correct answer.

Methane absorbs heat from the sun very effectively and warms the atmosphere, and hence it is a major greenhouse gas

Thermal pollution causes a decrease in dissolved oxygen.

evs - i for a pollution free nature ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Thermal pollution is when an industry or other human-made organization takes in water from a natural source and either cools it down or heats it up. They then eject the water back into the natural resource, which changes the oxygen level and can have a disastrous effect on the local ecosystem. 

Environmental pollution can be controlled by:

evs - i for a pollution free nature ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. spraying insecticides and pesticides

  2. the open burning of tree stumps

  3. treating factory wastes before disposing them

  4. disposing hot water from power stations into the sea

Show answer
Correct Option: C
Explanation:

Environmental pollution can be controlled by treating factory wastes before disposing of them. So, if we treat wastewater before disposing of in a river, it will surely decrease the amount of dumped pollutants. 

For example- Steel industries have a high concentration of cyanide in it, and it led to harmful effect. So, treatment is really necessary.

A school can also help in the development of a community or to solve a problem.

evs - i public facilities and my school public facilities efforts of the government in social circle and its effects on people government in social sector

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

School is a social institution of education. It plays a pivotal role in human development. Social development is one of the important dimensions. Schooling provides a person the logical thinking. It helps the student to emerge into a responsible being and help to develop its social sphere i.e., the community. It is through education that provides a human being the elements of human relation, economic efficiency, and civic knowledge. Furthermore, the technique of problem-solving helps the students to find a solution to a problem and make strategies. Thus, a school can help in community development or to solve a problem.

The society gives _____________ to schools.

evs - i public facilities and my school public facilities efforts of the government in social circle and its effects on people government in social sector

  1. Owner

  2. Faith

  3. Interlinked

  4. Land

Show answer
Correct Option: D
Explanation:

Things given by society to schools are as follows:

1. Land
2. Donations
3. Manpower
4. Pupil
5. Nobel laureate
6. Necessary facilities like hospitals, grounds for seminars, library, etc.