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 gas is not a constituent of atmosphere

Question # 2

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

Question # 3

Domestic waste mostly constitutes

Question # 4

SO2and NO2produce pollution by increasing

Question # 5

SO2Makes ______ acid rains

Question # 6

Chromium (VI) is highly toxic and can cause

Question # 7

Which gasses are produced from landfills

Question # 8

Chief source of water and soil pollution is

Question # 9

Cyclone collector is used for minimizing

Question # 10

Chief air pollutant which is likely to deplete ozone layer

Question # 11

Which one is the most toxic?

Question # 12

Which factor is helping to reduce the environmental pollution

Question # 13

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

Question # 14

Phosphate pollution is caused by

Question # 15

Ecology is a science of environment and deals specially with

Question # 16

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 17

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 18

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

Question # 19

Which is not the condition for the formation of smog

Question # 20

Which causes water pollution?

Question # 21

The amount of oxygen in the lithosphere is about

Question # 22

Acid rains are produced by

Question # 23

In the atmosphere, O2is about

Question # 24

Which is not a method for solid waste management

Question # 25

In purification of potable water the coagulant used is

Question # 26

The amount of Si in the lithosphere is about

Question # 27

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

Question # 28

Oceans cove ______ percent of the surface of the earth

Question # 29

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 # 30

The % of CO2is the atmosphere is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
2 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
3 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
4 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
5 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
6 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
7 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
8 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
9 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration
10 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine

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