ECAT Pre Engineering Chemistry Chapter 27 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

Try The MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

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ECAT Chemistry Chapter 27 Environmental Chemistry

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Question # 1

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 2

Which is not a method for solid waste management

Question # 3

Ecosystem is a smaller unit of

Question # 4

Which of the following waste material is not recycled for use again

Question # 5

Photochemical smog is caused by

Question # 6

NO and NO2gases in atmosphere are represented by

Question # 7

Burning of fossil fuels is the main source of pollution

Question # 8

The amount of Si in the lithosphere is about

Question # 9

Which of the following is not an air

Question # 10

Acid rains are produced by

Question # 11

Water is often treated with chlorine to

Question # 12

Which gas is not a constituent of atmosphere

Question # 13

SO2Makes ______ acid rains

Question # 14

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 15

Which step is unnecessary for purification of water for drinking purposes

Question # 16

Chief source of water and soil pollution is

Question # 17

Shahi Qilla may be destroyed by

Question # 18

Spraying of DDT produces pollution of

Question # 19

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 20

Ozone hole is maximum over

Question # 21

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 22

Chloroflurocarbon releases a chemical harmful to ozone

Question # 23

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 24

Result of ozone hole is

Question # 25

Acid rain is due to increase in atmospheric concentration of

Question # 26

Which factor is helping to reduce the environmental pollution

Question # 27

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 28

Which one of the following is not air pollutant gas

Question # 29

Which gasses are produced from landfills

Question # 30

The film forming components of paints are

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
2 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
3 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
4 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
5 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
6 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
7 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
8 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
9 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
10 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action

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