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

The film forming components of paints are

Question # 2

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

Question # 3

Most hazardous metal pollutant of automobile exhaust is

Question # 4

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

Question # 5

Water pollution is mainly due to

Question # 6

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 # 7

Which factor is helping to reduce the environmental pollution

Question # 8

Drained sewage has B.O.D

Question # 9

Spraying of DDT produces pollution of

Question # 10

The % of CO2is the atmosphere is

Question # 11

Result of ozone hole is

Question # 12

In purification of potable water the coagulant used is

Question # 13

UV radiations bring about

Question # 14

Sulphur dioxide affects

Question # 15

Chromium (VI) is highly toxic and can cause

Question # 16

Depletion of ozone layer is due to

Question # 17

DDT is

Question # 18

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 19

Ecosystem is a smaller unit of

Question # 20

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

Question # 21

Pollution is

Question # 22

Which causes water pollution?

Question # 23

Which is not the condition for the formation of smog

Question # 24

Drawback DDT as presticide is

Question # 25

NO and NO2gases in atmosphere are represented by

Question # 26

In incinerating the waste is burnt at

Question # 27

Domestic waste mostly constitutes

Question # 28

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

Question # 29

In the atmosphere, CO2is about

Question # 30

Acid rains are produced by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
2 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
3 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
4 What is the cause of water pollution
A. Chemical and bacterial contents in live stock
B. The spilled oil in rivers and ponds
C. Wide spread use of pesticides
D. All of the above
5 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
6 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
7 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
8 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
9 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
10 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere

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