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 is not the affect of polluted air on environment

Question # 2

Which heavy metals do not have any safe limits

Question # 3

Drained sewage has B.O.D

Question # 4

As it passes into food chain, the concentration of DDT

Question # 5

Which is not a component of environment

Question # 6

Swage water is purified by

Question # 7

What is the cause of water pollution

Question # 8

Eutrophication causes reduction in

Question # 9

The pH range of the acid rain is

Question # 10

Which step is unnecessary for purification of water for drinking purposes

Question # 11

Oceans cove ______ percent of the surface of the earth

Question # 12

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

Question # 13

The normal amount of overhead ozone is about

Question # 14

Domestic waste mostly constitutes

Question # 15

Pick up the correct statement

Question # 16

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

Question # 17

Water is often treated with chlorine to

Question # 18

Carbon monoxide is pollutant as it

Question # 19

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

Question # 20

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

Question # 21

In the atmosphere, O2is about

Question # 22

Exposure to CO results in

Question # 23

Increasing skin cancer and high mutation rate are due to

Question # 24

Which one is not a pollutant normally?

Question # 25

Ozone depletion in stratosphere shall result in

Question # 26

Chloroflurocarbon releases a chemical harmful to ozone

Question # 27

Acid rains are produced by

Question # 28

Which is not a method for solid waste management

Question # 29

Atmosphere of big/metropolitan cities is polluted most by

Question # 30

Water which his considered to be safe for human consumption is known as

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
2 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
3 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
4 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
5 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
6 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
7 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
8 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
9 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine
10 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it

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