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

00:00
Question # 1

Biodegradable pollutant is

Question # 2

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 3

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

Question # 4

Photochemical smog is caused by

Question # 5

Fungicides are the pesticides which

Question # 6

Ozone hole refers to

Question # 7

The % of CO2is the atmosphere is

Question # 8

When chlorofluoro carbon are subjected to U.V. they form

Question # 9

In Antarctica ozone depletion is due to the formation of following compound

Question # 10

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 11

Phosphate pollution is caused by

Question # 12

Atomospheric pollutant is

Question # 13

In incinerating the waste is burnt at

Question # 14

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 15

Soil salinity can be measured by

Question # 16

Which of the following is not an air

Question # 17

NO and NO2gases in atmosphere are represented by

Question # 18

Burning of fossil fuels is the main source of pollution

Question # 19

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 20

The amount of Si in the lithosphere is about

Question # 21

Which gas is not a constituent of atmosphere

Question # 22

Drained sewage has B.O.D

Question # 23

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 24

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

Question # 25

Drawback DDT as presticide is

Question # 26

Polycyolic aromatic hydrocarbons are taught to be

Question # 27

Water pollution is mainly due to

Question # 28

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 29

As it passes into food chain, the concentration of DDT

Question # 30

Acid rain is due to increase in atmospheric concentration of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
2 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
3 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
4 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
5 Shahi Qilla may be destroyed by
A. Flood in Ravi
B. Temperature mediated spoilage of marble
C. Air pollutants from Lahore chemical industries
D. All the above
6 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
7 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
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
8 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
9 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
10 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes

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