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

Chloroflurocarbon releases a chemical harmful to ozone

Question # 2

Carbon monoxide is harmful to human beings as it

Question # 3

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 # 4

Which causes water pollution?

Question # 5

Oceans cove ______ percent of the surface of the earth

Question # 6

In the atmosphere, O2is about

Question # 7

Fungicides are the pesticides which

Question # 8

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 9

Minamata disease is due to pollution of

Question # 10

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 # 11

Sulphur dioxide affects

Question # 12

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

Question # 13

Soil remediation means

Question # 14

Cyclone collector is used for minimizing

Question # 15

Increasing skin cancer and high mutation rate are due to

Question # 16

Photochemical smog is caused by

Question # 17

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

Question # 18

The largest item which is recycled is

Question # 19

Which is not the affect of polluted air on environment

Question # 20

Which one is the major reason for pollution in high cities?

Question # 21

SO2and NO2produce pollution by increasing

Question # 22

Which factor is helping to reduce the environmental pollution

Question # 23

UV radiations bring about

Question # 24

Increased asthmatic attacks in certain seasons are related to

Question # 25

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 26

NO and NO2gases in atmosphere are represented by

Question # 27

Atomospheric pollutant is

Question # 28

Air pollution is not caused by

Question # 29

Biodegradable pollutant is

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
2 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
3 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
4 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
5 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
6 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
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
7 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
8 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
9 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
10 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs

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