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

In the atmosphere, CO2is about

Question # 2

Which causes water pollution?

Question # 3

The normal amount of overhead ozone is about

Question # 4

Phosphate pollution is caused by

Question # 5

The pH range of the acid rain is

Question # 6

Which factor is helping to reduce the environmental pollution

Question # 7

Air pollution is not caused by

Question # 8

UV radiations bring about

Question # 9

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

Question # 10

Water pollution is mainly due to

Question # 11

Ultraviolet radiation from sun causes a reaction that produces

Question # 12

Ecology is a science of environment and deals specially with

Question # 13

The amount of Si in the lithosphere is about

Question # 14

Minamata disease is due to pollution of

Question # 15

Which step is unnecessary for purification of water for drinking purposes

Question # 16

Chloroflurocarbon releases a chemical harmful to ozone

Question # 17

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

Question # 18

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

Question # 19

DDT is

Question # 20

SO2Makes ______ acid rains

Question # 21

Which is not a method for solid waste management

Question # 22

Water is often treated with chlorine to

Question # 23

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 24

Pollution is

Question # 25

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 26

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 # 27

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 28

A single chlorine free radical can destroy how many ozone molecules

Question # 29

BOD is

Question # 30

Classical smog occurs in palces of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
4 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
5 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
6 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
7 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
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 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
10 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy

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