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

Ultraviolet radiation from sun causes a reaction that produces

Question # 2

Which one is not a pollutant normally?

Question # 3

Ozone hole refers to

Question # 4

Photochemical smog is caused by

Question # 5

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

Question # 6

In purification of potable water the coagulant used is

Question # 7

Phosphate pollution is caused by

Question # 8

Depletion of ozone layer is due to

Question # 9

The amount of Si in the lithosphere is about

Question # 10

Pick up the correct statement

Question # 11

Chromium (VI) is highly toxic and can cause

Question # 12

Which step is unnecessary for purification of water for drinking purposes

Question # 13

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

Question # 14

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

Question # 15

Most hazardous metal pollutant of automobile exhaust is

Question # 16

The pH range of the acid rain is

Question # 17

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 18

Which heavy metals do not have any safe limits

Question # 19

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

Question # 20

Carbon monoxide is pollutant as it

Question # 21

Cyclone collector is used for minimizing

Question # 22

Which is not a method for solid waste management

Question # 23

Chief source of water and soil pollution is

Question # 24

Ecosystem is a smaller unit of

Question # 25

Which factor is helping to reduce the environmental pollution

Question # 26

BOD is

Question # 27

The largest item which is recycled is

Question # 28

Pollution is

Question # 29

As it passes into food chain, the concentration of DDT

Question # 30

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

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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 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
3 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
4 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
5 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
6 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
7 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine
8 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
9 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
10 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these

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