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

Potable water is considered to be

Question # 2

Chloroflurocarbon releases a chemical harmful to ozone

Question # 3

Which one is not a pollutant normally?

Question # 4

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 # 5

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 6

Swage water is purified by

Question # 7

The film forming components of paints are

Question # 8

The amount of oxygen in the lithosphere is about

Question # 9

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

Question # 10

Environmental pollution affects

Question # 11

Which is not the condition for the formation of smog

Question # 12

Water pollution is mainly due to

Question # 13

Which is not a component of environment

Question # 14

As it passes into food chain, the concentration of DDT

Question # 15

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 16

Biodegradable pollutant is

Question # 17

Increasing skin cancer and high mutation rate are due to

Question # 18

Shahi Qilla may be destroyed by

Question # 19

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

Question # 20

Ecology is a science of environment and deals specially with

Question # 21

NO and NO2gases in atmosphere are represented by

Question # 22

Ozone hole is maximum over

Question # 23

Which causes water pollution?

Question # 24

Burning of fossil fuels is the main source of pollution

Question # 25

Soil remediation means

Question # 26

Chief air pollutant which is likely to deplete ozone layer

Question # 27

Sulphur dioxide affects

Question # 28

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

Question # 29

Phosphate pollution is caused by

Question # 30

Drawback DDT as presticide is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
2 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
3 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
4 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
5 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
6 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
7 In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
A. 2 - 4 ppm
B. 4 - 6 ppm
C. 2 - 5 ppm
D. 4 - 8 ppm
8 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
9 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
10 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%

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