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

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 # 2

Potable water is considered to be

Question # 3

B.O.D is connected with

Question # 4

NO and NO2gases in atmosphere are represented by

Question # 5

Pollution is

Question # 6

In purification of potable water the coagulant used is

Question # 7

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 # 8

Acid rain is due to increase in atmospheric concentration of

Question # 9

DDT is

Question # 10

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

Question # 11

Chloroflurocarbon releases a chemical harmful to ozone

Question # 12

Sulphur dioxide affects

Question # 13

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

Question # 14

The normal amount of overhead ozone is about

Question # 15

Which of the following human activities are contaminating surface and ground waters

Question # 16

UV radiations bring about

Question # 17

Ecology is a science of environment and deals specially with

Question # 18

SO2Makes ______ acid rains

Question # 19

A pollutant affects

Question # 20

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 21

Fungicides are the pesticides which

Question # 22

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 23

Oceans cove ______ percent of the surface of the earth

Question # 24

In the atmosphere, CO2is about

Question # 25

Chief source of water and soil pollution is

Question # 26

Soil salinity can be measured by

Question # 27

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

Question # 28

Atmosphere of big/metropolitan cities is polluted most by

Question # 29

Which causes water pollution?

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 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
2 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
3 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above
4 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
5 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
6 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
7 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
8 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
9 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
10 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine

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