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

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 # 2

Which heavy metals do not have any safe limits

Question # 3

UV radiations bring about

Question # 4

Water is often treated with chlorine to

Question # 5

The largest item which is recycled is

Question # 6

The amount of oxygen in the lithosphere is about

Question # 7

BOD is

Question # 8

What is the cause of water pollution

Question # 9

The normal amount of overhead ozone is about

Question # 10

The amount of Si in the lithosphere is about

Question # 11

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

Question # 12

Chloroflurocarbon releases a chemical harmful to ozone

Question # 13

Acid rains are produced by

Question # 14

The % of CO2is the atmosphere is

Question # 15

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

Question # 16

Exposure to CO results in

Question # 17

Swage water is purified by

Question # 18

Oceans cove ______ percent of the surface of the earth

Question # 19

Photochemical smog is caused by

Question # 20

Ozone depletion in stratosphere shall result in

Question # 21

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

Question # 22

Increasing skin cancer and high mutation rate are due to

Question # 23

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 24

As it passes into food chain, the concentration of DDT

Question # 25

Water pollution is mainly due to

Question # 26

Domestic waste mostly constitutes

Question # 27

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 28

Which is not a component of environment

Question # 29

Increased asthmatic attacks in certain seasons are related to

Question # 30

Depletion of ozone layer is due to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
2 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
3 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
4 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
5 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
6 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
7 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
8 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
9 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
10 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%

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