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 amount of oxygen in the lithosphere is about

Question # 2

Ozone hole is maximum over

Question # 3

Chief source of water and soil pollution is

Question # 4

In incinerating the waste is burnt at

Question # 5

Which factor is helping to reduce the environmental pollution

Question # 6

Phosphate pollution is caused by

Question # 7

Atomospheric pollutant is

Question # 8

Which of the following is not an air

Question # 9

Chromium (VI) is highly toxic and can cause

Question # 10

Soil remediation means

Question # 11

Drained sewage has B.O.D

Question # 12

Which heavy metals do not have any safe limits

Question # 13

Result of ozone hole is

Question # 14

Potable water is considered to be

Question # 15

Ecology is a science of environment and deals specially with

Question # 16

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

Question # 17

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

Question # 18

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 # 19

B.O.D is connected with

Question # 20

Air pollution is not caused by

Question # 21

Oceans cove ______ percent of the surface of the earth

Question # 22

SO2Makes ______ acid rains

Question # 23

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 # 24

SO2and NO2produce pollution by increasing

Question # 25

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

Question # 26

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

Question # 27

Biodegradable pollutant is

Question # 28

Sulphur dioxide affects

Question # 29

Spraying of DDT produces pollution of

Question # 30

Burning of fossil fuels is the main source of pollution

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
2 Minamata disease is due to pollution of
A. Organic waste into drinking water
B. Oil spill in water
C. Industrial waste containing mercury into fishing water
D. Arsenic into the atmosphere
3 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
4 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
5 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
6 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
7 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
8 Pick up the correct statement
A. CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog
B. Classical smog has an oxidizing character while the phtochemical smog is reducing in character
C. Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours
D. During formation of smog the level of ozone in the atmosphere goes down
9 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
10 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above

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