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 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 2

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

Question # 3

Biodegradable pollutant is

Question # 4

The largest item which is recycled is

Question # 5

Domestic waste mostly constitutes

Question # 6

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

Question # 7

Which one is the major reason for pollution in high cities?

Question # 8

Minamata disease is due to pollution of

Question # 9

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 10

Which is not a component of environment

Question # 11

As it passes into food chain, the concentration of DDT

Question # 12

Sulphur dioxide affects

Question # 13

Which factor is helping to reduce the environmental pollution

Question # 14

The % of CO2is the atmosphere is

Question # 15

Carbon monoxide is harmful to human beings as it

Question # 16

Water pollution is mainly due to

Question # 17

Shahi Qilla may be destroyed by

Question # 18

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 19

The amount of Si in the lithosphere is about

Question # 20

Water is often treated with chlorine to

Question # 21

The pH range of the acid rain is

Question # 22

Carbon monoxide is pollutant as it

Question # 23

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

Question # 24

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

Question # 25

Chromium (VI) is highly toxic and can cause

Question # 26

Ecology is a science of environment and deals specially with

Question # 27

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

Question # 28

Burning of fossil fuels is the main source of pollution

Question # 29

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

Question # 30

Which heavy metals do not have any safe limits

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
2 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
3 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
4 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
5 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
6 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
7 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
8 One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
9 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
10 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie

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