What Is Pollution

Q.

List out three methods of soil conservation.

Q.

Which of the following is not a greenhouse gas?

1. Carbon dioxide

2. Sulfur dioxide

3. Methane

4. Nitrogen

Q.

What do CFCs stand for? Name some devices where CFCs are used. Why CFCs are considered pollutants?

Q.

A common indicator organism of water pollution is

1. Eichhornia crassipes

2. Entamoeba histolytica

3. Escherichia coli

4. Lemna paucicostata

Q.

What is Remustering Candidate in Indian Army?

Q.

Green house effect refers to

1. Cooling of earth

2. Trapping of UV rays

3. Production of cereals

4. Warming of earth

Q. Nitrogen fixation is shown by prokaryotes and not by eukaryotes. Comment.

Q.

DDT is categorised under -

1)non biodegradable pollutant

2)primary pollutant

3) qualitative pollutant

4)all of these

Q.

Which vehicle does not pollute the environment?

1. Bus

2. Cycle

3. Auto

4. Aeroplane

Q. Amount of glomerular filtrate formed per day is

1. 50 L
2. 180 L
3. 1000 L
4. 250 L

Q.

Name the following :
The type of pollution which causes an increase in the number of cancers.

Q. Which of the following organism is an example of polluted water indicator?

1. $Daphnia$
2. Trout fish
3. $E.coli$
4. Lichens

Q.

Why do detergents cause water pollution?

Q. Which one among the following chemicals is used for causing defoliation of forest trees?

1. ANO-1618
2. Phosphon D
3. Malic hydrazide
4. 2, 4-D

Q. Which of the following is/are true?
I. Benzene hexachloride is a non-biodegradable pollutant.
II. Anthropogenic air pollutants are natural in origin.
III. Carbon monoxide is a primary air pollutant.
IV. Sulphur dioxide causes brown air effect during traffic congestion in cities.

1. I and III
2. I and II
3. II and III
4. II and IV

Q.

At what height is the ozone layer present?

Q. Which of the following is not a major greenhouse gas?

1. Carbon dioxide
2. Calcium carbonate
3. Water vapour
4. Methane

Q.

Carbon monoxide _________ the oxygen carrying capacity of the blood.

Q.

What are Electrostatic Precipitators?

Q. State whether the following statements are true or false?

I. Human activities are sole responsible for air pollution.
II. Air pollutants do not affect the growth and yield of crops.
III. Air pollutants have detrimental effects on the respiratory system of humans.

Choose the correct option.

1. I - F, II - T, III - F
2. I - T, II - T, III - F
3. I - T, II - F, III - F
4. I -F, II - F, III - T

Q. Heated/thermal wastewaters constitute an important category of pollutants, released from

1. Both A and C
2. Domestic sewage
3. Electricity-generating units
4. Thermal power plants

Q.

Ozone hole was discovered in

1. 1992

2. 1985

3. 1995

4. 1998

Q.

What are environmental issues ?how we concerned about it?

Q.

List the everyday practices that can reduce carbon dioxide emission.

Q.

Many ________ are responsible for causing ________ pollution. Petroleum ________ are a major source of ________ pollutants like ________ and ________. (sulphur dioxide, refineries, industries, nitrogen dioxide, gaseous, liquid, people, air).

Q. is a substance that harms the environment.

1. Pollutant
2. Adulterant
3. Toxin
4. Contaminant

Q. Gastrointestinal problems are caused by

Q.

What gases cause acid rain?

Q. which among the following is a correct pair of decomposers?

1. Bacteria and viruses
2. Bacteria and fungi
3. Viruses and diatoms
4. Diatoms and slime moulds

Q. Air pollution and noise pollution.