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

Chromium (VI) is highly toxic and can cause

Question # 2

Environmental pollution affects

Question # 3

The pH range of the acid rain is

Question # 4

The normal amount of overhead ozone is about

Question # 5

Classical smog occurs in palces of

Question # 6

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

Question # 7

Atomospheric pollutant is

Question # 8

Water is often treated with chlorine to

Question # 9

Chloroflurocarbon releases a chemical harmful to ozone

Question # 10

Chief source of water and soil pollution is

Question # 11

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

Question # 12

Depletion of ozone layer is due to

Question # 13

Acid rains are produced by

Question # 14

BOD is

Question # 15

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

Question # 16

NO and NO2gases in atmosphere are represented by

Question # 17

Fungicides are the pesticides which

Question # 18

Polycyolic aromatic hydrocarbons are taught to be

Question # 19

In purification of potable water the coagulant used is

Question # 20

Minamata disease is due to pollution of

Question # 21

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 # 22

Most hazardous metal pollutant of automobile exhaust is

Question # 23

Exposure to CO results in

Question # 24

Result of ozone hole is

Question # 25

Which factor is helping to reduce the environmental pollution

Question # 26

What is the cause of water pollution

Question # 27

Which is not the affect of polluted air on environment

Question # 28

Increased asthmatic attacks in certain seasons are related to

Question # 29

Burning of fossil fuels is the main source of pollution

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
3 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
4 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
5 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
6 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
7 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
8 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
9 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
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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