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

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

Question # 2

Acid rain is due to increase in atmospheric concentration of

Question # 3

Burning of fossil fuels is the main source of pollution

Question # 4

Which is not the condition for the formation of smog

Question # 5

The region of earth capable of supporting life is

Question # 6

SO2and NO2produce pollution by increasing

Question # 7

The % of CO2is the atmosphere is

Question # 8

NO and NO2gases in atmosphere are represented by

Question # 9

Which is not the affect of polluted air on environment

Question # 10

The largest item which is recycled is

Question # 11

Spraying of DDT produces pollution of

Question # 12

A single chlorine free radical can destroy how many ozone molecules

Question # 13

Chromium (VI) is highly toxic and can cause

Question # 14

Ecology is a science of environment and deals specially with

Question # 15

Ozone hole is maximum over

Question # 16

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 17

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

Question # 18

Which step is unnecessary for purification of water for drinking purposes

Question # 19

The normal amount of overhead ozone is about

Question # 20

BOD is

Question # 21

Most hazardous metal pollutant of automobile exhaust is

Question # 22

Carbon monoxide is harmful to human beings as it

Question # 23

Which is not a component of environment

Question # 24

As it passes into food chain, the concentration of DDT

Question # 25

Drawback DDT as presticide is

Question # 26

Soil remediation means

Question # 27

SO2Makes ______ acid rains

Question # 28

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 29

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 30

Chloroflurocarbon releases a chemical harmful to ozone

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
2 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
3 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
4 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
5 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
6 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
7 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
8 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
9 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
10 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above

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