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

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 2

Eutrophication causes reduction in

Question # 3

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

Question # 4

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

Question # 5

Polycyolic aromatic hydrocarbons are taught to be

Question # 6

The % of CO2is the atmosphere is

Question # 7

Exposure to CO results in

Question # 8

Water is often treated with chlorine to

Question # 9

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

Question # 10

The normal amount of overhead ozone is about

Question # 11

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 12

Ozone depletion in stratosphere shall result in

Question # 13

The amount of oxygen in the lithosphere is about

Question # 14

Atomospheric pollutant is

Question # 15

Carbon monoxide is pollutant as it

Question # 16

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

Question # 17

Chromium (VI) is highly toxic and can cause

Question # 18

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

Question # 19

Increased asthmatic attacks in certain seasons are related to

Question # 20

The largest item which is recycled is

Question # 21

Chief air pollutant which is likely to deplete ozone layer

Question # 22

SO2Makes ______ acid rains

Question # 23

A pollutant affects

Question # 24

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

Question # 25

Cyclone collector is used for minimizing

Question # 26

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

Question # 27

Acid rain is due to increase in atmospheric concentration of

Question # 28

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 29

Most hazardous metal pollutant of automobile exhaust is

Question # 30

Which heavy metals do not have any safe limits

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
2 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
3 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
4 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
5 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
6 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
7 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
8 Which of the following human activities are contaminating surface and ground waters
A. Pesticides
B. Septic tanks
C. Petroleum and natural gas production
D. All of these
9 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
10 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers

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