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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 4
16.
High noise level in a chemical plant can be controlled by the
suppression of noise at the source itself.
path control of noise.
protection of operating personnel.
all (a), (b) & (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.
reduce SO2 content in
catalytically convert SO2 to SO3 in
increase the dew point of
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Main pollutants released from petroleum refineries is
CO, SO2 & H2S.
CO2, NO & SO3.
CO2, H2S & NO2.
SO3, NO2 & CO2.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels.
35
75
95
105
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Which of the following is a green house gas other than CO2 ?
Methane
Nitrous oxide
Chlorofluro carbons (CFC)
All (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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