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

A pollutant affects

Question # 2

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

Question # 3

B.O.D is connected with

Question # 4

The normal amount of overhead ozone is about

Question # 5

Which of the following is not an air

Question # 6

Environmental pollution affects

Question # 7

Which step is unnecessary for purification of water for drinking purposes

Question # 8

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

Question # 9

Which is not the condition for the formation of smog

Question # 10

Which one is not a pollutant normally?

Question # 11

Drawback DDT as presticide is

Question # 12

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

Question # 13

Chloroflurocarbon releases a chemical harmful to ozone

Question # 14

Pollution is

Question # 15

Which is not a method for solid waste management

Question # 16

A single chlorine free radical can destroy how many ozone molecules

Question # 17

In purification of potable water the coagulant used is

Question # 18

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 19

Chromium (VI) is highly toxic and can cause

Question # 20

Exposure to CO results in

Question # 21

Domestic waste mostly constitutes

Question # 22

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

Question # 23

What is the cause of water pollution

Question # 24

The largest item which is recycled is

Question # 25

Increasing skin cancer and high mutation rate are due to

Question # 26

Water pollution is mainly due to

Question # 27

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

Question # 28

Depletion of ozone layer is due to

Question # 29

Ecology is a science of environment and deals specially with

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
2 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
3 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
4 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
5 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
6 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
7 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
8 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
9 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
10 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

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