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

Which of the following is not an air

Question # 2

Minamata disease is due to pollution of

Question # 3

Soil remediation means

Question # 4

Chief air pollutant which is likely to deplete ozone layer

Question # 5

Classical smog occurs in palces of

Question # 6

Burning of fossil fuels is the main source of pollution

Question # 7

The pH range of the acid rain is

Question # 8

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 9

Which is not the condition for the formation of smog

Question # 10

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

Question # 11

B.O.D is connected with

Question # 12

The amount of Si in the lithosphere is about

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

Carbon monoxide is harmful to human beings as it

Question # 17

Fungicides are the pesticides which

Question # 18

Eutrophication causes reduction in

Question # 19

The normal amount of overhead ozone is about

Question # 20

A single chlorine free radical can destroy how many ozone molecules

Question # 21

Sulphur dioxide affects

Question # 22

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 23

Which factor is helping to reduce the environmental pollution

Question # 24

SO2and NO2produce pollution by increasing

Question # 25

In Antarctica ozone depletion is due to the formation of following compound

Question # 26

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

Question # 27

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

Question # 28

In the atmosphere, CO2is about

Question # 29

Which is not a component of environment

Question # 30

Oceans cove ______ percent of the surface of the earth

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
2 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
3 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
4 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
5 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
6 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
7 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
8 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
9 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
10 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97

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