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

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 2

Fungicides are the pesticides which

Question # 3

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

Question # 4

Swage water is purified by

Question # 5

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

Question # 6

Ozone depletion in stratosphere shall result in

Question # 7

Chloroflurocarbon releases a chemical harmful to ozone

Question # 8

Which gasses are produced from landfills

Question # 9

What is the cause of water pollution

Question # 10

Water which his considered to be safe for human consumption is known as

Question # 11

Ozone hole refers to

Question # 12

Most hazardous metal pollutant of automobile exhaust is

Question # 13

Drained sewage has B.O.D

Question # 14

Which step is unnecessary for purification of water for drinking purposes

Question # 15

Water pollution is mainly due to

Question # 16

The % of CO2is the atmosphere is

Question # 17

Ecology is a science of environment and deals specially with

Question # 18

Chromium (VI) is highly toxic and can cause

Question # 19

Spraying of DDT produces pollution of

Question # 20

Environmental pollution affects

Question # 21

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

Question # 22

Which of the following is not an air

Question # 23

In incinerating the waste is burnt at

Question # 24

Which is not the condition for the formation of smog

Question # 25

The pH range of the acid rain is

Question # 26

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

Question # 27

Which causes water pollution?

Question # 28

Domestic waste mostly constitutes

Question # 29

SO2Makes ______ acid rains

Question # 30

Soil remediation means

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
2 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
3 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
4 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
5 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
6 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
7 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
8 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
9 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
10 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2

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