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

In purification of potable water the coagulant used is

Question # 2

DDT is

Question # 3

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 # 4

Pollution is

Question # 5

Atmosphere of big/metropolitan cities is polluted most by

Question # 6

Air pollution is not caused by

Question # 7

Most hazardous metal pollutant of automobile exhaust is

Question # 8

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

Question # 9

SO2and NO2produce pollution by increasing

Question # 10

Which causes water pollution?

Question # 11

UV radiations bring about

Question # 12

As it passes into food chain, the concentration of DDT

Question # 13

In incinerating the waste is burnt at

Question # 14

Phosphate pollution is caused by

Question # 15

Environmental pollution affects

Question # 16

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

Question # 17

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 18

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

Question # 19

Polycyolic aromatic hydrocarbons are taught to be

Question # 20

Minamata disease is due to pollution of

Question # 21

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

Question # 22

Photochemical smog is caused by

Question # 23

Cyclone collector is used for minimizing

Question # 24

NO and NO2gases in atmosphere are represented by

Question # 25

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

Question # 26

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 # 27

Which one is the most toxic?

Question # 28

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

Question # 29

Ecosystem is a smaller unit of

Question # 30

Carbon monoxide is harmful to human beings as it

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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 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
3 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
4 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
5 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
6 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
7 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
8 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
9 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
10 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere

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