Chemical Engineering - Environmental Engineering

21.
Presence of __________ bacteria in water causes disease like typhoid.
aerobic
pathogenic
anaerobic
non-pathogenic
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.
102
105
109
1015
Answer: Option
Explanation:
No answer description is available. Let's discuss.

23.
Green house gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect ?
CO2
H2
SO3
N2
Answer: Option
Explanation:
No answer description is available. Let's discuss.

24.
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
global warming
green house
atmospheric effect
ionosphere
Answer: Option
Explanation:
No answer description is available. Let's discuss.

25.
Fresh domestic sewage is __________ in color.
grey
dark brown
red
black
Answer: Option
Explanation:
No answer description is available. Let's discuss.