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 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 # 2

Minamata disease is due to pollution of

Question # 3

Environmental pollution affects

Question # 4

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

Question # 5

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 6

In the atmosphere, CO2is about

Question # 7

Which one is not a pollutant normally?

Question # 8

Which causes water pollution?

Question # 9

Which gas is not a constituent of atmosphere

Question # 10

Which is not the condition for the formation of smog

Question # 11

Exposure to CO results in

Question # 12

Which factor is helping to reduce the environmental pollution

Question # 13

Air pollution is not caused by

Question # 14

Burning of fossil fuels is the main source of pollution

Question # 15

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

Question # 16

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

Question # 17

In purification of potable water the coagulant used is

Question # 18

The amount of Si in the lithosphere is about

Question # 19

Increasing skin cancer and high mutation rate are due to

Question # 20

A pollutant affects

Question # 21

Ecology is a science of environment and deals specially with

Question # 22

As it passes into food chain, the concentration of DDT

Question # 23

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

Question # 24

Shahi Qilla may be destroyed by

Question # 25

SO2Makes ______ acid rains

Question # 26

Which heavy metals do not have any safe limits

Question # 27

Fungicides are the pesticides which

Question # 28

Atmosphere of big/metropolitan cities is polluted most by

Question # 29

Biodegradable pollutant is

Question # 30

Most hazardous metal pollutant of automobile exhaust is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
2 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
3 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
4 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
5 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
6 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
7 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
8 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
9 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
10 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2

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