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

In purification of potable water the coagulant used is

Question # 2

Chief source of water and soil pollution is

Question # 3

Pollution is

Question # 4

UV radiations bring about

Question # 5

Polycyolic aromatic hydrocarbons are taught to be

Question # 6

Most hazardous metal pollutant of automobile exhaust is

Question # 7

Which factor is helping to reduce the environmental pollution

Question # 8

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 9

Ultraviolet radiation from sun causes a reaction that produces

Question # 10

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 11

Ozone depletion in stratosphere shall result in

Question # 12

In incinerating the waste is burnt at

Question # 13

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

Question # 14

Phosphate pollution is caused by

Question # 15

Ecosystem is a smaller unit of

Question # 16

Soil remediation means

Question # 17

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 18

Drained sewage has B.O.D

Question # 19

Exposure to CO results in

Question # 20

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 # 21

Increased asthmatic attacks in certain seasons are related to

Question # 22

Soil salinity can be measured by

Question # 23

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

Question # 24

Swage water is purified by

Question # 25

Water which his considered to be safe for human consumption is known as

Question # 26

Increasing skin cancer and high mutation rate are due to

Question # 27

The region of earth capable of supporting life is

Question # 28

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 29

Which is not a method for solid waste management

Question # 30

Which gasses are produced from landfills

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
3 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
4 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
5 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
6 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
7 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
8 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
9 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
10 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere

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