Effects of Air Pollutants

Q. Acid rains are produced by

1. excess production of ${\mathrm{NH}}_3$ by industry and coal gas
2. excess release of carbon monoxide by incomplete combustion
3. excess emissions of ${\mathrm{NO}}_2$ and ${\mathrm{SO}}_2$from burning fossil fuels
4. excess formation of ${\mathrm{CO}}_2$ by combustion and animal respiration

Q.

Taj Mahal is threatened due to the effect of:

1. Chlorine

2. Sulphur dioxide

3. Oxygen

4. Hydrogen

Q. Which of the following has highest pH?

1. Human saliva
2. Human blood
3. Gastric juice
4. Urine

Q.

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to

1. benign growth on mucous lining of nasal cavity

2. inflammation of bronchi and bronchioles

3. proliferation of fibrous tissues and damage of the alveolar walls

4. reduction in the secretion of surfactants by pneumocytes

Q.

Why is it necessary to remove sulphur from petroleum products?

1. To increase efficiency of automobiles engines.

2. To reduce the emission of sulphur dioxide in exhaust fumes.

3. To use sulphur removed from petroleum for commercial purposes.

4. To increase the life span of engine silencers.

Q. Acid rains are produced by excess release of

1. release of carbon monoxide by incomplete combustion
2. formation of CO2 by combustion and animal respiration
3. Production of NH3 by industry and coal gas
4. NO2 and SO2 form burning

Q. Which of the following on inhalation dissolves in blood haemoglobin more rapidly than oxygen?

1. Ozone
2. Sulphur dioxide
3. Carbon monoxide
4. Nitric oxide

Q. Which of the following types of pollutants are carcinogenic?

1. VOCs
2. Methane
3. Heavy metals
4. Particulate matter

Q. In the pre-industrialised environment of England, the light coloured moths were able to camouflage with the bark of trees due to the growth of ________ on the trees.

1. lichens
2. mosses
3. ferns
4. conifers

Q. Assertion: A person from plain areas when visiting high altitude experiences altitude sickness.

Reason: At high altitudes, atmospheric pressure is generally high leading to symptoms like nausea, fatigue, etc.

1. Both the assertion and reason are true and the reason is the correct explanation of the assertion
2. Both the assertion and reason are true but the reason is not the correct explanation for the assertion
3. The assertion is true but the reason is false
4. Both assertion and the reason are false

Q. Benzene and formaldehyde are two among many volatile organic compounds that cause air pollution. Given below are a few negative effects of these volatile compounds on humans. Which of these is/are exclusively caused by the above mentioned compounds and not by other volatile compounds?

1. (ii) and (iii)
2. Only iv
3. (i), (ii) and (iv)
4. (i) and (ii)

Q. How many of the following statements are true?

I. Mosses and lichens can not only indicate the existence of air pollution but can also help in measuring air quality
II. Some species of mosses are highly sensitive to increased levels of nitrogen in the atmosphere
III. Growth of lichens indicate that coal has not been burnt in the area for quite some time
IV. Old man’s beard is a type of moss that grows only when air has high levels of sulphur dioxide

1. 1
2. 2
3. 3
4. 4

Q.

Acid rains are caused by excessive atmospheric pollution due to

1. CO₂

2. N₂0

3. SO₂

4. NH₃

Q. Nitrogen oxides and volatile compounds react in the presence of heat and sunlight to form ___.

Q. Recent reports of acid rain in big industrial cities are due to the effect of atmospheric pollution by

1. more release of CO₂ by burning of coal/wood cutting of forests and increasing population
2. excessive release of NH₃ by coal gas/ industries
3. excessive release of CO by incomplete combustion of carbonaceous fuels
4. more release of NO₂ and SO₂ by burning of fossil fuels

Q.

___________ is the swelling of the lining of bronchial tubes.

Q. Read the following statements regarding the PAN (peroxyacyl nitrates) and select the correct ones.
(i) It is a secondary pollutant present in photochemical smog.
(ii) It is produced by photochemical reactions between hydrocarbons and nitrogen oxides in the presence of sunlight of UV radiations.
(iii) It is thermally unstable and decomposes into peroxyethanoyl radicals and nitrogen dioxide gas.
(iv) It is a lachrymatory substance, causing irritation of eyes.

1. (i) and (ii)`
2. (i), (ii), (iii) and (iv)
3. (iii) and (iv)
4. (i), (ii), and (iii)

Q.

Aerosols can affect primary productivity by

1. Inhibiting photosynthesis

2. Increasing CO₂

3. Decreasing oxygen

4. None of these

Q. Acid rain is caused by increase in the atmospheric concentration of:

1. $O_3$ and dust
2. $S{O}_2$ and $N{O}_2$
3. $S{O}_3$ and CO
4. $C{O}_2$ and CO

Q.

Gas released during Bhopal tragedy was

1. sodium isothiocyanate

2. potassium isothiocyanate

3. ethyl isothiocyanate

4. Methyl isocyanate

Q. Which one of the following statements is wrong in case of Bhopal tragedy?

1. It took place on the night of December $\frac{2}{3}$, 1984
2. Methyl isocyanate gas leakage took place
3. Thousands of human beings died
4. Radioactive fallout engulfed Bhopal

Q. pH of succus entericus is

1. 6.6
2. 2
3. 7.8
4. 5.6

Q. Which of the following contribute(s) to acid rain?

1. Sludge worms
2. Blood worms
3. Stone flies
4. Sewage fungus

Q. Which of the following biological techniques helps to control the pollution?

1. Use of pesticides
2. Use of electrostatic precipitator
3. Use of fertilizers
4. None of the above

Q.

Acid rains occur in

1. Urban areas

2. Rural areas

3. Highly industrialized regions of the world

4. all of these

Q.

In Which Year Did The Bhopal Gas Tragedy Took Place.

Q. Choose the aspects which are common to sulphur and nitrogen oxides?

1. (i), (ii) and (iv)
2. (i) and (iv)
3. Only (iii)
4. (iii) and (iv)

Q. A location with luxuriant growth of lichens on the trees indicates that the

1. location is highly polluted
2. trees are heavily infested
3. location is not polluted
4. trees are very healthy

Q. Taj Mahal is threatened by pollution from

1. Sulphur dioxide
2. Chlorine
3. Hydrogen
4. Oxygen

Q. Nitrogen oxides produced from the emission of automobiles and power plants are the source of fine airborne particles which lead to

1. Photochemical smog
2. Dry air deposition
3. Industrial smog
4. Wet acid deposition