5. Environmental Pollution

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44. Amongst the following, which is better suited for dumping of nuclear waste?

(1) Salt mines (2) Deserts

(3) Forests (4) Oceans

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Ans: 1

42. Which of the following is considered as a secondary air pollutant?

(1) Nitric oxide (2) Ozone

(3) Sulphur dioxide (4) Carbon monoxide

Ans: 2

45. In large parts of Eastern India, the ground water is contaminated by

(1) Arsenic

(2) Lead

(3) Mercury 

(4) Nickel

Ans: 1

43. Taj Mahal is mainly threatened by the deleterious effects of

(1) Sulphur dioxide 

(2) Chlorine

(3) Oxygen 

(4) Hydrogen

Ans: 1

41. One of the parameters used to characterise the air quality at a location is PM2s. Here, the suffix ‘2.5’ refers to

(1) average number of suspected particles in 1.0 cm3 of air

(2) size of suspended particles in certain units

(3) concentration of oxides of sulphur and nitrogen

(4) concentration of suspended particles in 2.5 m3 of air

Ans: 2

37. Exposure to noise pollution can cause

1. Weakening of immune system
2. Sleeplessness
3. Speech interference
4. Increase in blood pressure
5. Shift in threshold of hearing
6. Respiratory problems

Choose the correct option from those given below:

1. (a), (b), (c), (e) and (f)
2. (b), (c), (d) and (e)
3. (b), (c), (d), (e) an (f)
4. (a), (b), (c), (d), (e) and (f)

Ans. 2

34. Which of the following air pollutants are produced from room deodorizers?

1. Inhalable particulate matter
2. Carbon monoxide
3. Ozone
4. Volatile organic compounds

Ans. 4

38. The most important pollutants that cause degradation of water quality in rivers and streams are

1. Bacteria
2. Nutrients
3. Metals
4. Total dissolved solids
5. Algae

Choose the most appropriate answer from the options given below:

1. (a), (b) and (c)
2. (a), (b) and (d)
3. (a), (b), (d) and (e)
4. (a), (b), (c), (d) and (e)

Ans. 1

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40. The most dominant source of Benzene emissions in ambient air is

1. Cement industry 
2. Cigarettes
3. Car exhausts
4. Paints and varnish

Ans. 3

(29). Spread of forest fires is influenced by

(a) Slope

(b) Soil Moisture

(c) Wind

Choose the correct answer from the options given below:

1. (a) and (b) only
2. (b) and (c) only
3. (a) and (c) only
4. (a) , (b) and (d) only

Ans: 4

(30). Consider the following statements regarding noise pollution:

(a) Noise levels decrease as we move away from the source of noise

(b) Materials with high surface/mass density act as good noise barriers

(c) Sound pressure of 2 u Pa corresponds to a noise of zero decibel

Choose the correct option from those given below:

1. (a) and (b) only 
2. (b) and (c) only 
3. (a) and (c) only 
4. (a), (b) and (c)

Ans: 1

(40). Which of the two following is the correct sequence of greenhouse gases according to their relative global warming potential in increasing order?

1. Nitrous oxide. Methane, Carbon dioxide. Chlorofluorocarbons 
2. Carbon dioxide. Methane, Nitrous oxide, Chlorofluorocarbons 
3. Methane, Nitrous oxide, Carbon dioxide, Chlorofluorocarbons 
4. Carbon dioxide. Nitrous oxide. Methane, Chlorofluorocarbons

Ans: 2

33. Major sources of oxygen demanding waste in fresh water systems are

(a) Agricultural run-off

(b) Food processing

(c) Ore mining

(d) Sewage effluent

(e) Landfill sites

Choose the correct option from those given below:

(1) (a), (d) and (e) 

(2) (b), (d) and (e)

(3) (a), (b) and (d) 

(4) (a), (b), (c) and (d)

Ans. 3

34. Identify the correct group of diseases caused by polluted water

(a) Cholera, Acute Diarrhoea, Typhoid and Polio

(b) Cholera, Typhoid, Enteritis and Tuberculosis

(c) Typhoid, Enteritis and Tuberculosis

(d) Cholera, Acute Diarrhoea, Typhoid and Tuberculosis

Ans. A

Q.43 The global emissions (by weight) of the following primary pollutants from natural sources are maximum in the case of 

1. Nitric oxide
2. Carbon monoxide
3. Methene
4. Carbon dioxide 

Ans:4

Q.45 In case of which of the following primary pollutants, the man made contributions to global emissions (million tonnes per year) is more compared to that from natural sources?

1. Sulphur dioxide
2. Nitric oxide
3. Methene
4. Carbon oxide

Ans:1

Q.41 The phenomenon of ozone depletion is caused by 

1. Volatile chlorinated hydrocarbons
2. Emissions from thermal power plants
3. Combustion of urban waste
4. Excessive use of nitrogen-containing fertilizers

Choose the correct answer from the options given below:

1. A, B and D only’
2. A and D only
3. A, B and C only
4. A, C and D only

Ans:2

Q.45 Day time noise standard prescribed for residential areas in india is

1. 75 DB 
2. 65 DB
3. 55DB
4. 50 DB

Ans:3

Q.41  Given below are two statements, one is labelled as assertion A and the other is labelled as reason R

Assertion A: Lakes are considered to be more susceptible to pollution than rivers 

Reason R: Water in lakes may take decade(s) to be replaced

In the light of the above statements, choose the most appropriate answer from the options given below

1. Both A and R are correct and R is the correct explanation of A
2. Both A and R are correct but R is not the correct explanation of A
3. A is correct but R is not correct
4. A is  not correct but R Is correct

Ans:1

Q.43 Noise pollution is measured in decibels (db) with reference to a standard sound intensity of following magnitude

1. 1 pico watt per m2
2. 1 milliwatt per m2
3. 1 nanowatt per m2
4. 1 microwatt per m2 

Ans:1

Q.44 In a polluted urban area, which one of the following has the highest concentration (ppv) in photochemical smog?

1. Ozane
2. PAN
3. Hydrocarbons (without methane)
4. Carbon monoxide

Ans:4

Q.38 According to noise pollution (Regulation and control) rules, 2000, the light time noise standard prescribed for educational institutions is

1. 55 db (A)
2. 50 db (A)
3. 45 db ( A)
4. 40 db (A)

Ans:4

Q.37 Given below are two statements, one is labelled as assertion A and the other is labelled as reason R

Assertion A: Lakes are less prone to getting polluted than rivers

Reason R : water in lakes gets replaced through natural processes 

In the light of the above the statements, choose the most appropriate answer from the options given below

1. Both A and R are correct and R is the correct explanation of A
2. Both A and R are correct but R is not the correct explanation of A
3. A is correct but R is not correct
4. A is  not correct but R Is correct

Ans:4

Q.36 Contamination of aquatic environment by Polychlorinated Biphenyls (PCBs) can originate from  

(A) Sewage effluent 

(B) Waste incinerators

(C) Toxic dumps 

(D) Tharmal power plants 

(E) Transport sector

Choose  the correct answer from the options given below

(1)  (A) (C)  (E) only

(2)  (A) (B)  (D) (E) only

(3)  (B) (C)  (D) only

(4)  (A) (B) (C) only

Ans:4

Q.37   Given below are two statements

Statement I : Emissions of hydrocarbons and carbon monoxide are inherently very low from diesel vehicles 

Statement II : Diesel driven vehicles are inherently more fuel efficient compared to petrol driven vehicles.

In the light of the above statements, choose the most appropriate answer from the options given below

(1) Both statement I and Statement II are correct

(2) Both statement I and Statement II are incorrect

(3) Statement I is correct but statement II is incorrect

(4) Statement I is incorrect but statement II is correct

Ans:1

Q.38 If the intensity of a given noise increases two fold, the noise level in decibels (db) increase by

 (1) ~2db

(2) ~3db

(3) ~ 6db

(4) ~ 10db

Ans:2

Q.39 Which of the following sources of energy on combustion produces maximum carbon dioxide per unit energy output or heat content?

(1) Coal (sub-bituminous)

(2) Natural gas

(3) Diesel fuel and heating oil 

(4) Gasoline (without ethanol)

Ans:1

Q.36 Given below are some metals which are released into environment from a variety of anthropogenic sources. Identify the metals which have been of serious concern from the point of view of pollution of water bodies 

(A) Aluminum 

(B) Copper

(C)  Mercury 

(D) Cadmium

(E) Lead

Choose the correct answer from the options given below

(1)  (B) (C)  (E) only

(2)  (A) (B) (C) (E) only

(3)  (C) (D)  (E) only

(4)  (A) (B) (E) only

Ans:3

Q.39 Identify the primary air pollutant among the following:

(1) Ozane

(2) Black carbon aerosols

(3) Sulphate aerosols 

(4) Peroxy acetyl nitrate (PAN)

Ans:2

Q.36 Exposure to excessive noise pollution can cause  

(A) Hearing 

(B) Insomnia

(C) Rise in blood pressure 

(D) Respiratory disease 

(E) Reduced work efficiency 

choose the most appropriate answer from the options given below

(1)  (A) (C) (E) only

(2)  (A) (C) (D) only

(3)  (B) (C) and (E) only

(4)  (A) (B) (C) and  (E) only

Ans:4

Q.38 Which of the following types of particulate matter pollutants are used in calculation of air quality index (AQI)?

(A) TSP ( total suspended particles)

(B) PM 10 (Particulate matters of size 10 micron or less )

(C) PM 2.5 ( Particulate matter of size 2.5 micron or less )

(D) PM 1 ( Particulate matter of size 1 micron or less )

Choose the  correct answer from the options given below :

(1)  (B) (C)  and  (D) only

(2)  (A) and  (B) only

(3)  (B) and (C) only

(4)  (A) (B) and (C) only

Ans:3

Q.38 Sick building syndrome (SBS) is a condition 

(1) When buildings are very old and about to college 

(2) Of human health due to indoor air pollution 

(3) Of fear due to deserted building 

(4) Of building devoid of any modern amenities 

Ans:2

Q39  Given below are two statements

Statement I : Dioxide and furans are highly toxic substances produced mainly during incineration of municipal solid waste, hazardous and medical wastes. 

Statement II : Dioxide and furans play crucial role in photochemical smog formation.

In the light of the above statements, choose the correct answer from the options given below

(1) Both statement I and Statement II are true

(2) Both statement I and Statement II are false

(3) Statement I is correct but statement II is false

(4) Statement I is incorrect but statement II is true

Ans:3

1. 36 From the following list, identify the sources of solid waste : 
2. i)  residential areas 
3. ii)  Oceans 

iii)  Institutional areas

1. iv) Agriculture 
2. v) Dust storms 

Choose the correct answer  from the options given below :

1. i), ii), and iii)
2. ii), iii) and iv)
3. iii), iv) and v)
4. i), iii) and iv)

Ans:4

Q.37 Identify the sources of soil pollution from the following list. 

1. i)  Industrial effluents 
2. ii)  Eutrophication 

iii) Unscientific disposal of nuclear waste 

1. iv) Off -shore oil drilling 
2. v) IMproper management of Septic system 

Choose the correct answer  from the options given below :

1. i), ii), and iii)
2. ii), iii) and iv)
3. i), iii) and v)
4. ii), iv) and v)

Ans:3

Q.39 The impact of noise pollution on human health is governed by:

1. a) Intensity of noise 
2. b) Duration of noise 
3. c) Socio – economic status of an individual 
4. d) Sensitivity of human ear 
5. e) Frequency range of noise 

Choose your answer from the options given below :

1. a), b), d)  and e) only
2. a), b)  and c) only 
3. a), c), d)  and e) only 

4.a),  b) c), d), and e) 

Ans:1

Q.38 Photochemical smog in urban areas is known to cause 

1. Respiratory effects 
2. Eye irritation 
3. Nose and throat irritation 
4. Carcinogenic effect 
5. Reduction in visibility 

Choose the correct answer from the options given below :

1. Only  (a), (b) and (d)
2. Only (a), (b), (c)  and (e) 
3. Only (b), (d)  and (e) 
4. (a), (b), (c), (d) and (e)

Ans:2

Q.39 Landslides are of 

1. Chemical origin 
2. Hydrological origin 
3. Hydro-biological origin 
4. Geo physical origin 

Ans:4

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