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

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 2

SO2Makes ______ acid rains

Question # 3

Which step is unnecessary for purification of water for drinking purposes

Question # 4

Burning of fossil fuels is the main source of pollution

Question # 5

Eutrophication causes reduction in

Question # 6

Which one is the most toxic?

Question # 7

In the atmosphere, CO2is about

Question # 8

Drained sewage has B.O.D

Question # 9

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

Question # 10

Increasing skin cancer and high mutation rate are due to

Question # 11

Which one of the following is not air pollutant gas

Question # 12

The normal amount of overhead ozone is about

Question # 13

Mottling of teeth is due to presence of an element in drinking water

Question # 14

Carbon monoxide is harmful to human beings as it

Question # 15

Acid rain is due to increase in atmospheric concentration of

Question # 16

Ozone hole refers to

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

The amount of Si in the lithosphere is about

Question # 21

Chief source of water and soil pollution is

Question # 22

Chloroflurocarbon releases a chemical harmful to ozone

Question # 23

BOD is

Question # 24

Which of the following is not an air

Question # 25

Which is not a component of environment

Question # 26

A single chlorine free radical can destroy how many ozone molecules

Question # 27

Classical smog occurs in palces of

Question # 28

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

Question # 29

Water pollution is mainly due to

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
2 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
3 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
4 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration
5 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
6 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
7 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
8 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
9 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
10 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water

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