Pollution Test 3

Total Questions:50 Total Time: 75 Min



Questions 1 of 50

Question:Gastro-intestinal disturbances is caused by

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Questions 2 of 50

Question:Decrease in rate of mitosis in root tips is caused by

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Questions 3 of 50

Question:BOD. test or biochemical oxygen demand test is made for measuring

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Air pollution

Water pollution

Noise pollution

Soil pollution

Questions 4 of 50

Question:In B.O.D. test, oxygen plays an important role to

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Destroy inorganic matter

Destroy pollution

Destroy waste organic matter

None of these

Questions 5 of 50

Question:Eutrophication is caused by

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Mine effluents

Sewage and detergents

Petrochemical and fertilizer plant effluents

\({\rm{N}}{{\rm{O}}_3}\) and \({\rm{S}}{{\rm{O}}_4}\) present in acid rains

Questions 6 of 50

Question:By which method the quantity of organic pollutants in water can be determined

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By pH measurement

By transparency measurement

By measuring the change of colour

By measuring BOD

Questions 7 of 50

Question:High chloroform count in water is an indicator of

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Industrial pollution

Sewage contamination

Hardness of water

Oil pollution

Questions 8 of 50

Question:Which of the following causes outbreak of jaundice

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Air pollution

Water pollution

Thermal pollution

Soil pollution

Questions 9 of 50

Question:Which is the most \({\rm{S}}{O_{\rm{2}}}\)polluted city

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Questions 10 of 50

Question:It is said, the Taj Mahal may be destroyed due to

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Flood in Yamuna river

Decomposition of marble as a result of high temperature

Air pollutants released from oil refinery of Mathura

All the above

Questions 11 of 50

Question:Which of the following is a water polluting factor

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Industrial waste



Questions 12 of 50

Question:Which of the following is normally not an atmospheric pollutant

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Carbon monoxide

Carbon dioxide

Sulphur dioxide


Questions 13 of 50

Question:Smog is a common pollutant in places having

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High temperature

Low temperature

Excessive \(S{O_2}\) in the air

Excessive ammonia in the air

Questions 14 of 50

Question:Lichens do not like to grow in cities

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Because of absence of the right type of algae and fungi

Because of lack of moisture

Because of \({\rm{S}}{O_{\rm{2}}}\) pollution

Because natural habitat is missing

Questions 15 of 50

Question:Thermal pollution of water bodies is due to

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Discharge of heat (hot water) from power plants

Discharge of chemicals from industries

Discharge of waste from mining

Discharges of agricultural run off

Questions 16 of 50

Question:Biological treatment of water pollution is done with the help of

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None of the above

Questions 17 of 50

Question:Major pollution causing agent is

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Hydrocarbon gases

None of the above

Questions 18 of 50

Question:Effect of pollution is first and most marked on

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Natural flora of a place

Natural geochemical cycle

Natural gaseous cycle

Natural balance of our environment

Questions 19 of 50

Question:Acid rain is caused due to increase in concentration of (in atmosphere)

Answers Choices:

\({\RM{S}}{O_{\RM{2}}}\) and N\({O_{\rm{2}}}\)

CO and \({\RM{C}}{O_{\RM{2}}}\)

CO and


\({O_{\rm{3}}}\) and dust

Questions 20 of 50

Question:Today the concentration of green house gases is very high because of

Answers Choices:

Use of refrigerator

Increased combustion of oils and coal


All of the above

Questions 21 of 50

Question:Increase in the percentage of fauna and decrease in flora may be dangerous because it enhances

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Percentage of \({\RM{C}}{O_{\RM{2}}}\)

Percentage of radioactive fall out

Percentage of \({O_{\rm{2}}}\)

Percentage of diseases

Questions 22 of 50

Question:The pollution in city like Delhi may be controlled to great extent

Answers Choices:

By proper sewage and proper exit of chemicals from factories

By wide roads and factories away from the city

By cleaning city and scanty use of pesticides

All of the above

Questions 23 of 50

Question:Eutrophication results in the reduction of

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Dissolved hydrogen

Dissolved oxygen

Mineral salts

None of these

Questions 24 of 50

Question:The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen by (approx.)

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200 times

2 times

1000 times

20 times

Questions 25 of 50

Question:Taj Mahal is threatened due to the effect of

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Sulphur dioxide



Questions 26 of 50

Question:When huge amount of sewage is dumped into a river, the BOD will

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Remain unchanged

Slightly decrease


Questions 27 of 50

Question:The river 'Sone' receives wastes from

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Textile mill

Paper mill

Questions 28 of 50

Question:Oxides of sulphur and nitrogen are important pollutants of

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Air and water




Questions 29 of 50

Question:Leaf curling is caused by

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Questions 30 of 50

Question:In coming years, skin related disorders will be more common due to

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Pollutants in air

Use of detergents

Water pollution

Depletion of ozone layer

Questions 31 of 50

Question:Which of the following organism is likely to have more concentration of D.D.T in its body

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Top carnivores

Primary producers

Questions 32 of 50

Question:Increasing of temperature due to scattering of energy is determine by ozone. \({\RM{C}}{O_{\RM{2}}}\) and water vapour, is known as

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Ozone effect

Solar reaction

Green house effect

Questions 33 of 50

Question:Water pollution is caused due to

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Sewage and other wastes

Industrial effluents

Agricultural discharges

All of these

Questions 34 of 50

Question:Which among the following is likely to have the highest levels of D.D.T. depositions in its body

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Sea gull


Questions 35 of 50

Question:Effect of pollution is first marked on

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Green vegetation of an area

Food crop

None of these

Questions 36 of 50

Question:Green muffler is used against which type of pollution

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Questions 37 of 50

Question:Positive pollution of soil is due to

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Excessive use of fertilizers

Addition of wastes on soil

Reduction in soil productivity

All of these

Questions 38 of 50

Question:CO is more toxic than \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) because

Answers Choices:

It affects the nervous system

It damages lungs

It reduces the oxygen carrying capacity of haemoglobin

It forms acid with water

Questions 39 of 50

Question:The soil pollutants that affect the food chain and food web by killing micro organisms and plants are

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Chemical fertilizers

Agricultural wastes


Questions 40 of 50

Question:Chernobyl tragedy occurred in

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26th May, 1966

26th April, 1986

6th Aug., 1947

9th May, 1945

Questions 41 of 50

Question:The main cause of water pollution is

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Industrial effluents



Questions 42 of 50

Question:Which of the following is not a pollutant

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Carbon dioxide

Sulphur dioxide

Carbon Monooxide

Questions 43 of 50

Question:Which of the following plant is used for the purification of water

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Questions 44 of 50

Question:Which of the following metal is a water pollutant and causes sterility in human being

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Questions 45 of 50

Question:In which one of the following the BOD (Biochemical Oxygen Demand) of sewage (S) distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order

Answers Choices:

SE < S < PE < DE

SE < PE < S < DE

PE < S < SE < DE

S < DE < PE < SE

Questions 46 of 50

Question:Examples of regional pollution are

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Acid rain


Both (1) and (2)

None of these

Questions 47 of 50

Question:Checking of reradiating heat by atmospheric dust \({O_3}\),C\({O_2}\) and water vapours is

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Green house effect

Solar effect

Ozone layer effect

Radioactive effect

Questions 48 of 50

Question:Black-foot disease is caused due to groundwater contaminated with excess of

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Questions 49 of 50

Question:Which of the following group of gases cause photochemical smog

Answers Choices:

\({O_{\rm{3}}}\), PAN and CO

HC, NO and PAN

\({O_2}\), PAN and N\({O_2}\)

\({O_2}\), PAN and N\({O_{\rm{3}}}\)

\({O_{\rm{3}}}\), PAN and N\({O_2}\)

Questions 50 of 50

Question:Blue-baby syndrome is caused by

Answers Choices:

Cadmium pollution

Mercury poisoning

Chronic exposure to arsenic

Excess nitrate in drinking water

Excess fluoride in drinking water