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

Polycyolic aromatic hydrocarbons are taught to be

Question # 3

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

Question # 4

NO and NO2gases in atmosphere are represented by

Question # 5

Depletion of ozone layer is due to

Question # 6

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

Question # 7

Which is not the affect of polluted air on environment

Question # 8

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

Question # 9

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

Question # 10

Acid rain is due to increase in atmospheric concentration of

Question # 11

Air pollution is not caused by

Question # 12

Which gas is not a constituent of atmosphere

Question # 13

Chromium (VI) is highly toxic and can cause

Question # 14

DDT is

Question # 15

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 16

The amount of Si in the lithosphere is about

Question # 17

B.O.D is connected with

Question # 18

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

Question # 19

A pollutant affects

Question # 20

In purification of potable water the coagulant used is

Question # 21

Which one is the most toxic?

Question # 22

The film forming components of paints are

Question # 23

Which is not a component of environment

Question # 24

Ozone hole is maximum over

Question # 25

Ecology is a science of environment and deals specially with

Question # 26

Carbon monoxide is harmful to human beings as it

Question # 27

Oceans cove ______ percent of the surface of the earth

Question # 28

Minamata disease is due to pollution of

Question # 29

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 30

Classical smog occurs in palces of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
2 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
3 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
4 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
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 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
7 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
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 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
10 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil

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