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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 5
21.
Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm.
<1
10-100
100-200
100-1000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Photochemical smog is formed from automobile exhaust
by reaction of hydrocarbon & nitric oxide in presence of sunlight.
appears only on sunny days.
is harmful for crops and trees also besides causing eye irritation & asthma.
all (a), (b) & (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Reinglemann chart is used for the measurement of the
combustibles present in automobile exhaust.
smoke density from a chimey.
exhaust gas density.
flue gas temperature.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Disinfection of water is done to remove
color
bad taste
foul odour
bacteria
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Which of the following fine dust removal equipments is the most efficient ?
Bag filter
Scrubber
Electrostatic precipitator
Cyclone separator
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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