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

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Question # 1

SO2and NO2produce pollution by increasing

Question # 2

Chromium (VI) is highly toxic and can cause

Question # 3

Which heavy metals do not have any safe limits

Question # 4

Chief air pollutant which is likely to deplete ozone layer

Question # 5

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 # 6

The % of CO2is the atmosphere is

Question # 7

The normal amount of overhead ozone is about

Question # 8

In the atmosphere, O2is about

Question # 9

B.O.D is connected with

Question # 10

SO2Makes ______ acid rains

Question # 11

Air pollution is not caused by

Question # 12

In purification of potable water the coagulant used is

Question # 13

Which one is not a pollutant normally?

Question # 14

Which of the following human activities are contaminating surface and ground waters

Question # 15

Drawback DDT as presticide is

Question # 16

Which is not the affect of polluted air on environment

Question # 17

Sulphur dioxide affects

Question # 18

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 19

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

Question # 20

DDT is

Question # 21

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

Question # 22

Water pollution is mainly due to

Question # 23

Domestic waste mostly constitutes

Question # 24

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 25

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

Question # 26

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

Question # 27

Which factor is helping to reduce the environmental pollution

Question # 28

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

Question # 29

Classical smog occurs in palces of

Question # 30

Increased asthmatic attacks in certain seasons are related to

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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 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
3 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
4 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
5 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
6 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
7 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
8 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
9 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
10 When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
A. Uninfluenced by occurrence of thuderstorm
B. Which depends on the amount of dust in air
C. Slightly lower than that of rain water without thunderstorm
D. Slighlty higher than that when the thunderstom is not there

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