Environmental Engineering

Question: Global warming may result in
[A].

flood

[B].

cyclone

[C].

decrease in food productivity

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: Green house effect is accentuated by
[A].

deforestation.

[B].

rapid industrialisation.

[C].

increased transportation activity.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: A ‘body’ which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the
[A].

global warming

[B].

green house

[C].

atmospheric effect

[D].

ionosphere

Answer: Option B

Explanation:

No answer description available for this question.

Question: On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because
[A].

of clotting of blood.

[B].

of jamming of respiratory tract.

[C].

it forms carboxyhaemoglobin by combining with haemoglobin of blood, thereby making it incapable of absorbing oxygen.

[D].

it forms CO2 by combining with oxygen present in the blood.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Carbon monoxide is a pollutant, which causes
[A].

respiratory disease (e.g. asthma).

[B].

asphyxiation (suffocation) leading to death.

[C].

retardation in crop growth.

[D].

damage to building materials like marble.

Answer: Option B

Explanation:

No answer description available for this question.

Question: In water chemical treatment plant, use of chloramines ensures
[A].

disinfection.

[B].

taste & odour control.

[C].

weed control in reservoirs.

[D].

removal of permanent hardness.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.
[A].

reduce SO2 content in

[B].

catalytically convert SO2 to SO3 in

[C].

increase the dew point of

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Exposure to SO2 containing chimney gases results in the
[A].

reduction in strength of leather & cloth.

[B].

acceleration of corrosion rates of metals.

[C].

increased drying & hardening time of paints.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm.
[A].

10000

[B].

5

[C].

500

[D].

1000

Answer: Option B

Explanation:

No answer description available for this question.

Question: Lagooning process is mainly a means of the
[A].

sludge disposal.

[B].

reduction of excessive flow in sewers.

[C].

biological treatment of wastes.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.