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

Air pollution is not caused by

Question # 2

Spraying of DDT produces pollution of

Question # 3

Increasing skin cancer and high mutation rate are due to

Question # 4

SO2Makes ______ acid rains

Question # 5

Drawback DDT as presticide is

Question # 6

Soil salinity can be measured by

Question # 7

Fungicides are the pesticides which

Question # 8

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

Question # 9

Which gas is not a constituent of atmosphere

Question # 10

Which heavy metals do not have any safe limits

Question # 11

Which is not a component of environment

Question # 12

Phosphate pollution is caused by

Question # 13

Environmental pollution affects

Question # 14

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

Question # 15

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

Question # 16

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 17

SO2and NO2produce pollution by increasing

Question # 18

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

Question # 19

Minamata disease is due to pollution of

Question # 20

Shahi Qilla may be destroyed by

Question # 21

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

Question # 22

Which one is not a pollutant normally?

Question # 23

Which is not the condition for the formation of smog

Question # 24

Ozone depletion in stratosphere shall result in

Question # 25

Exposure to CO results in

Question # 26

Pollution is

Question # 27

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

Question # 28

In purification of potable water the coagulant used is

Question # 29

As it passes into food chain, the concentration of DDT

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. A and b only
2 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
3 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
4 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
5 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
6 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
7 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
8 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
9 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
10 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

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