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

Drained sewage has B.O.D

Question # 2

Chloroflurocarbon releases a chemical harmful to ozone

Question # 3

The normal amount of overhead ozone is about

Question # 4

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

Question # 5

Increased asthmatic attacks in certain seasons are related to

Question # 6

Which of the following human activities are contaminating surface and ground waters

Question # 7

In the atmosphere, O2is about

Question # 8

Spraying of DDT produces pollution of

Question # 9

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

Question # 10

Biodegradable pollutant is

Question # 11

Drawback DDT as presticide is

Question # 12

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 13

Ecosystem is a smaller unit of

Question # 14

Atomospheric pollutant is

Question # 15

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

Question # 16

Domestic waste mostly constitutes

Question # 17

Polycyolic aromatic hydrocarbons are taught to be

Question # 18

Ozone depletion in stratosphere shall result in

Question # 19

Ultraviolet radiation from sun causes a reaction that produces

Question # 20

Burning of fossil fuels is the main source of pollution

Question # 21

The region of earth capable of supporting life is

Question # 22

Carbon monoxide is harmful to human beings as it

Question # 23

Pick up the correct statement

Question # 24

The % of CO2is the atmosphere is

Question # 25

Classical smog occurs in palces of

Question # 26

Potable water is considered to be

Question # 27

Soil remediation means

Question # 28

Which causes water pollution?

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
2 In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
A. 2 - 4 ppm
B. 4 - 6 ppm
C. 2 - 5 ppm
D. 4 - 8 ppm
3 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
4 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
5 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
6 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
7 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
8 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
9 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
10 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

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