Test: Environmental Engineering - 7

Question 1

Pick out the wrong statement pertaining to 'green house' for the plants.

Accepted Answer

'Green house' is colder than the outside atmosphere.

Answer

'Green house' (made of glass) allows visible sunlight (i.e., short wavelength solar radiation like ultra-violet rays) to pass through the glass and heat up the soil thereby warming up plants inside it.

Answer

The emitted longer wavelength radiation (e.g., infrared) is partly reflected and partly absorbed by the glass of the green house.

Answer

'Green house effect' in earth's atmosphere is due to increasing CO₂ level in atmosphere. where CO₂ acts like the glass of 'green house' thereby warming up the earth's surface.

Question 2

In water treatment, alum[Al₂(SO₄)₃] is used for the process of

Accepted Answer

coagulation

Answer

filtration

Answer

sedimentation

Answer

disinfection

Question 3

Pick out the one which is not a chemical coagulant.

Accepted Answer

Chloramine

Answer

Aluminium sulphate

Answer

Ferrous sulphate

Answer

Hydrated lime

Question 4

Presence of iron and manganese in water causes

Accepted Answer

discoloration of bathroom fixtures.

Answer

reduction in its dissolved oxygen content.

Answer

temporary hardness.

Answer

none of these.

Question 5

Septic tanks are used for the __________ of the deposited solids.

Accepted Answer

anaerobic decomposition

Answer

separation

Answer

aerobic decomposition

Answer

none of these

Question 6

Death may occur, when SO₂ concentration in atmospheric air exceeds __________ ppm.

Accepted Answer

400

Answer

20

Answer

100

Answer

200

Question 7

Which of the following acts as a natural source of air pollution ?

Accepted Answer

Volcanic eruption

Answer

Forest fire

Answer

Deforestation

Answer

None of these

Question 8

Higher concentration of CO₂ in atmosphere

Accepted Answer

all (a), (b) and (c).

Answer

allows visible solar radiation (ultraviolet) of short wave-length to pass through.

Answer

reflects and absorbs the longer wavelength (infra-red) radiations.

Answer

prevents solar heat being radiated out completely, resulting in 'heat trap' i.e., global warming.

Question 9

Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm).

Accepted Answer

moderately

Answer

highly

Answer

extremely

Answer

very extremely

Question 10

Radioactive substances present in the polluted water stream can be removed by

Accepted Answer

adsorption in ion exchange materials.

Answer

biological oxygen treatment.

Answer

coagulation and filtration.

Answer

none of these.

Question 11

In the context of the chemical process industries, the term BOD is normally associated with the

Accepted Answer

characterisation of liquid effluents.

Answer

characterisation of solid wastes.

Answer

organic concentration in gaseous effluents.

Answer

characterisation of boiler feed water.

Question 12

Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels.

Accepted Answer

105

Answer

85

Answer

125

Answer

145

Question 13

Inhalation of silica dust causes a disease called

Accepted Answer

silicosis

Answer

bronchitis

Answer

pneumoconiosis

Answer

none of these

Question 14

Solid content in most of the domestic sewage is about __________ percent.

Accepted Answer

0.1

Answer

0.001

Answer

5

Answer

10

Question 15

In troposphere (the weather domain), the temperature 't' at height 'h' above the spa level in metres is given by (where, temperature at sea level is 15^oC and t is in ^oC.)

Accepted Answer

t = 15 - 0.0065h

Answer

t = 15 + 0.0065h

Answer

t = 0.0035h -15

Answer

t = 15 - 0.0035h

Question 16

High noise level in a chemical plant can be controlled by the

Accepted Answer

all (a), (b) & (c).

Answer

suppression of noise at the source itself.

Answer

path control of noise.

Answer

protection of operating personnel.

Question 17

Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.

Accepted Answer

reduce SO₂ content in

Answer

catalytically convert SO₂ to SO₃ in

Answer

increase the dew point of

Answer

none of these.

Question 18

Main pollutants released from petroleum refineries is

Accepted Answer

CO, SO₂ & H₂S.

Answer

CO₂, NO & SO₃.

Answer

CO₂, H₂S & NO₂.

Answer

SO₃, NO₂ & CO₂.

Question 19

Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels.

Accepted Answer

75

Answer

35

Answer

95

Answer

105

Question 20

Which of the following is a green house gas other than CO₂ ?

Accepted Answer

All (a), (b) and (c)

Answer

Methane

Answer

Nitrous oxide

Answer

Chlorofluro carbons (CFC)

Question 21

Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for

Accepted Answer

all (a), (b) and (c).

Answer

conversion of CO into CO₂ in the second compartment.

Answer

conversion of NO_x into N₂ and NH₃ in the first compartment.

Answer

oxidation of unburnt hydrocarbon fuel in the second compartment.

Question 22

Lagooning process is mainly a means of the

Accepted Answer

sludge disposal.

Answer

reduction of excessive flow in sewers.

Answer

biological treatment of wastes.

Answer

none of these.

Question 23

Carbon monoxide is a pollutant, which causes

Accepted Answer

asphyxiation (suffocation) leading to death.

Answer

respiratory disease (e.g. asthma).

Answer

retardation in crop growth.

Answer

damage to building materials like marble.

Question 24

Pollution by particulate matter emission in the atmosphere does not take place during metal

Accepted Answer

polishing

Answer

grinding

Answer

machining

Answer

cutting

Question 25

Direct reaction of unsaturated hydrocarbons with either NO or NO₂ produces an eye irritating pollutant compound known as

Accepted Answer

peroxy acetyl nitrate (PAN) or methyl nitrile.

Answer

photochemical smog.

Answer

benzopyrene.

Answer

poly acrylonitrile

Environmental Engineering - 7 - Free MCQ Practice Test with solutions,

MCQ Practice Test & Solutions: Test: Environmental Engineering - 7 (25 Questions)

Pick out the wrong statement pertaining to 'green house' for the plants.

In water treatment, alum[Al₂(SO₄)₃] is used for the process of

Pick out the one which is not a chemical coagulant.

Presence of iron and manganese in water causes

Septic tanks are used for the __________ of the deposited solids.

Death may occur, when SO₂ concentration in atmospheric air exceeds __________ ppm.

Which of the following acts as a natural source of air pollution ?

Higher concentration of CO₂ in atmosphere

Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm).

Radioactive substances present in the polluted water stream can be removed by

In the context of the chemical process industries, the term BOD is normally associated with the

Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels.

Inhalation of silica dust causes a disease called

Solid content in most of the domestic sewage is about __________ percent.

In troposphere (the weather domain), the temperature 't' at height 'h' above the spa level in metres is given by (where, temperature at sea level is 15^oC and t is in ^oC.)

High noise level in a chemical plant can be controlled by the

Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.

Main pollutants released from petroleum refineries is

Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels.

Which of the following is a green house gas other than CO₂ ?

Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for

Lagooning process is mainly a means of the

Carbon monoxide is a pollutant, which causes

Pollution by particulate matter emission in the atmosphere does not take place during metal

Direct reaction of unsaturated hydrocarbons with either NO or NO₂ produces an eye irritating pollutant compound known as

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Environmental Engineering - 7 - Free MCQ Practice Test with solutions,

MCQ Practice Test & Solutions: Test: Environmental Engineering - 7 (25 Questions)

Pick out the wrong statement pertaining to 'green house' for the plants.

In water treatment, alum[Al2(SO4)3] is used for the process of

Pick out the one which is not a chemical coagulant.

Presence of iron and manganese in water causes

Septic tanks are used for the __________ of the deposited solids.

Death may occur, when SO2 concentration in atmospheric air exceeds __________ ppm.

Which of the following acts as a natural source of air pollution ?

Higher concentration of CO2 in atmosphere

Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm).

Radioactive substances present in the polluted water stream can be removed by

In the context of the chemical process industries, the term BOD is normally associated with the

Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels.

Inhalation of silica dust causes a disease called

Solid content in most of the domestic sewage is about __________ percent.

In troposphere (the weather domain), the temperature 't' at height 'h' above the spa level in metres is given by (where, temperature at sea level is 15oC and t is in oC.)

High noise level in a chemical plant can be controlled by the

Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.

Main pollutants released from petroleum refineries is

Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels.

Which of the following is a green house gas other than CO2 ?

Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for

Lagooning process is mainly a means of the

Carbon monoxide is a pollutant, which causes

Pollution by particulate matter emission in the atmosphere does not take place during metal

Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as

Environmental Engineering

Environmental Engineering

Top Courses for Civil Engineering (CE)

About this Civil Engineering (CE) Practice Test

Explore more Civil Engineering (CE) Study Resources

In water treatment, alum[Al₂(SO₄)₃] is used for the process of

Death may occur, when SO₂ concentration in atmospheric air exceeds __________ ppm.

Higher concentration of CO₂ in atmosphere

In troposphere (the weather domain), the temperature 't' at height 'h' above the spa level in metres is given by (where, temperature at sea level is 15^oC and t is in ^oC.)

Which of the following is a green house gas other than CO₂ ?

Direct reaction of unsaturated hydrocarbons with either NO or NO₂ produces an eye irritating pollutant compound known as