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

Acid rain is due to increase in atmospheric concentration of

Question # 2

NO and NO2gases in atmosphere are represented by

Question # 3

Which step is unnecessary for purification of water for drinking purposes

Question # 4

A pollutant affects

Question # 5

Chromium (VI) is highly toxic and can cause

Question # 6

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 7

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

Question # 8

What is the cause of water pollution

Question # 9

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

Question # 10

Which is not the affect of polluted air on environment

Question # 11

B.O.D is connected with

Question # 12

Which factor is helping to reduce the environmental pollution

Question # 13

The % of CO2is the atmosphere is

Question # 14

The film forming components of paints are

Question # 15

Polycyolic aromatic hydrocarbons are taught to be

Question # 16

Which causes water pollution?

Question # 17

Cyclone collector is used for minimizing

Question # 18

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

Question # 19

Which is not the condition for the formation of smog

Question # 20

Swage water is purified by

Question # 21

In purification of potable water the coagulant used is

Question # 22

Spraying of DDT produces pollution of

Question # 23

Which one is not a pollutant normally?

Question # 24

The region of earth capable of supporting life is

Question # 25

Most hazardous metal pollutant of automobile exhaust is

Question # 26

Atomospheric pollutant is

Question # 27

Ultraviolet radiation from sun causes a reaction that produces

Question # 28

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 # 29

Minamata disease is due to pollution of

Question # 30

Which is not a method for solid waste management

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
2 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
3 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
4 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
5 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
6 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
7 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
8 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
A. Iodine
B. Bromine
C. Lead
D. Carbon
9 Shahi Qilla may be destroyed by
A. Flood in Ravi
B. Temperature mediated spoilage of marble
C. Air pollutants from Lahore chemical industries
D. All the above
10 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these

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