MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

MCQ's Test For MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

Try The MCQ's Test For MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

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MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

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Question # 1

Boron, aluminium, gallium, indium and thallium belong to group lll-A of the periodic table show a decrease with increasing relative atomic mass:

Question # 2

Which is not considered as pollutant

Question # 3

How much quantity of water is in the domestic use

Question # 4

What change in plants indicates toxic effect of SO2

Question # 5

Which not a method for solid waste management>

Question # 6

One of the environment 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 # 7

Which of spectral lines when atoms are subjected to strong electric field is called:

Question # 8

A single chlorine free radical can destory how many ozone molecules

Question # 9

The pH range of acid rain is?

Question # 10

Ecosystem is a smaller unit of

Question # 11

COD of water can be measured by

Question # 12

The main pollutant of leather in the waste water is due to the salt of:

Question # 13

Water is purified by:

Question # 14

The temperature of in the incineration of industrial and hazardous waste process has range

Question # 15

Chose a point which is not included in the components of environment

Question # 16

Increased awareness of environmental issues has led chemists to develop products and processes that do not impact on the environment in terms of pollution or depletion of sources. To help chemist to achieve this aim, some principles are drawn. Which one is not the guiding principle

Question # 17

Which is not a component of environment?

Question # 18

Oceans cove ____________ percent of the surface of the earth

Question # 19

A single chloride free radical can destroy the ozone molecules

Question # 20

Elements in lithosphere exist generally as:

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 The water is considered to be polluted when the concentration of oxygen in it is
A. 6 - 9ppm
B. 6 ppm
C. 8 ppm
D. Less than 4pm
2 The overall effect of the photochemical smog in the after noon is built up of
A. Neutralization
B. oxidizing agent
C. Reducing agent
D. Activating agent
3 Ocean contains part earth's water:
A. 95%
B. 96%
C. 97%
D. 98%
4 Part of fresh water consumed in industry is:
A. 1%
B. 2%
C. 69%
D. 23%
5 Oxides of sulphur react in atmosphere by various reactions to form:
A. sulphates
B. sulphites
C. sulphides
D. sulphate aerosols
6 How can heavy metal contamination like the presence of Hg or Pb may be removed from the soil
A. by using water spray
B. by blowing air
C. by treating with EDTA and then flushing the heavy metal complex out of the soil
D. by adding CaO
7 Ozone layer is present in
A. Troposphere
B. Stratosphere
C. Mesosphere
D. Ionosphere
8 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will not cause water pollution
A. live stock waste
B. agricultural pesticides
C. oil beaks and spills
D. all of the above
9 The temperature of in the incineration of industrial and hazardous waste process has range
A. 900 - 1000°C
B. 250 - 500°C
C. 950 - 1300°C
D. 500 - 900°C
10 Proxy acetyl nitrate (PAN) is an irritant to human beings and it affect
A. Nose
B. Stomach
C. Eyes
D. Ears

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