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

Drawback DDT as presticide is

Question # 2

Chief air pollutant which is likely to deplete ozone layer

Question # 3

Which gas is not a constituent of atmosphere

Question # 4

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

Question # 5

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 6

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

Question # 7

Swage water is purified by

Question # 8

What is the cause of water pollution

Question # 9

Burning of fossil fuels is the main source of pollution

Question # 10

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

Question # 11

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

Question # 12

Which one is the major reason for pollution in high cities?

Question # 13

The amount of oxygen in the lithosphere is about

Question # 14

Which is not the condition for the formation of smog

Question # 15

Which of the following waste material is not recycled for use again

Question # 16

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 17

Oceans cove ______ percent of the surface of the earth

Question # 18

Most hazardous metal pollutant of automobile exhaust is

Question # 19

Chief source of water and soil pollution is

Question # 20

Water is often treated with chlorine to

Question # 21

Polycyolic aromatic hydrocarbons are taught to be

Question # 22

Which one is the most toxic?

Question # 23

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 24

Which gasses are produced from landfills

Question # 25

Increased asthmatic attacks in certain seasons are related to

Question # 26

A single chlorine free radical can destroy how many ozone molecules

Question # 27

Ecosystem is a smaller unit of

Question # 28

The amount of Si in the lithosphere is about

Question # 29

NO and NO2gases in atmosphere are represented by

Question # 30

Which is not a method for solid waste management

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
2 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
3 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
4 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
5 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
6 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
7 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
8 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
9 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
10 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus

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