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

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 2

Acid rain is due to increase in atmospheric concentration of

Question # 3

DDT is

Question # 4

Burning of fossil fuels is the main source of pollution

Question # 5

The amount of oxygen in the lithosphere is about

Question # 6

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

Question # 7

Ultraviolet radiation from sun causes a reaction that produces

Question # 8

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

Question # 9

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

Question # 10

SO2and NO2produce pollution by increasing

Question # 11

Chief source of water and soil pollution is

Question # 12

A single chlorine free radical can destroy how many ozone molecules

Question # 13

Air pollution is not caused by

Question # 14

Photochemical smog is caused by

Question # 15

Which is not a method for solid waste management

Question # 16

Ozone hole is maximum over

Question # 17

Cyclone collector is used for minimizing

Question # 18

Potable water is considered to be

Question # 19

Drawback DDT as presticide is

Question # 20

Increasing skin cancer and high mutation rate are due to

Question # 21

When chlorofluoro carbon are subjected to U.V. they form

Question # 22

Which of the following is not an air

Question # 23

Sulphur dioxide affects

Question # 24

Pick up the correct statement

Question # 25

Chromium (VI) is highly toxic and can cause

Question # 26

Fungicides are the pesticides which

Question # 27

Swage water is purified by

Question # 28

Polycyolic aromatic hydrocarbons are taught to be

Question # 29

The % of CO2is the atmosphere is

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 Pick up the correct statement
A. CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog
B. Classical smog has an oxidizing character while the phtochemical smog is reducing in character
C. Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours
D. During formation of smog the level of ozone in the atmosphere goes down
2 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
3 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
4 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
5 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
6 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
7 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
8 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
9 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
10 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere

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