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

In purification of potable water the coagulant used is

Question # 2

Acid rains are produced by

Question # 3

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

Question # 4

Which gas is not a constituent of atmosphere

Question # 5

Which heavy metals do not have any safe limits

Question # 6

Soil remediation means

Question # 7

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 8

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

Question # 9

In the atmosphere, O2is about

Question # 10

Fungicides are the pesticides which

Question # 11

SO2Makes ______ acid rains

Question # 12

Which causes water pollution?

Question # 13

Chief air pollutant which is likely to deplete ozone layer

Question # 14

Eutrophication causes reduction in

Question # 15

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

Question # 16

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

Question # 17

The region of earth capable of supporting life is

Question # 18

The amount of oxygen in the lithosphere is about

Question # 19

Ozone depletion in stratosphere shall result in

Question # 20

Spraying of DDT produces pollution of

Question # 21

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 # 22

In the atmosphere, CO2is about

Question # 23

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

Question # 24

Pick up the correct statement

Question # 25

Sulphur dioxide affects

Question # 26

UV radiations bring about

Question # 27

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 # 28

As it passes into food chain, the concentration of DDT

Question # 29

Biodegradable pollutant is

Question # 30

SO2and NO2produce pollution by increasing

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
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 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
4 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
5 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
6 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
7 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
8 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
9 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
10 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above

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