The gas from sludge digestion tank is mainly composed of __________________?
B. carbon dioxide
C. hydrogen sulphide
D. methane(Correct)
B. carbon dioxide
C. hydrogen sulphide
D. methane(Correct)
B. carbon dioxide
C. hydrogen sulphide
D. methane(Correct)
Similar Posts
Fluorosis is caused due to the presence of excessive amount of __________ in drinking water.
Question: Fluorosis is caused due to the presence of excessive amount of __________ in drinking water.
[A].mercury [B].
lead [C].
fluoride [D].
arsenic Answer: Option C
Explanation:
No answer description available for this question.
Infective bacteria in water is killed by the __________ process.
Question: Infective bacteria in water is killed by the __________ process.
[A].sterilisation [B].
aeration [C].
disinfection [D].
none of these Answer: Option A
Explanation:
No answer description available for this question.
Which of the following chemical compounds can be used for dechlorination of water ?
Which of the following chemical compounds can be used for dechlorination of water ?A. carbon dioxide
B. bleaching powder
C. sulphur dioxide
D. chloraminesInhalation of silica dust by human being causes
Question: Inhalation of silica dust by human being causes
[A].asphyxiation [B].
shortness of breath [C].
tuberculosis [D].
both(b) & (c) Answer: Option D
Explanation:
No answer description available for this question.
Most of the bacteria in sewage are
Question: Most of the bacteria in sewage are
[A].parasitic [B].
saprophytic [C].
anerobic [D].
none of these Answer: Option B
Explanation:
No answer description available for this question.
Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.
Question: Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.
[A].low amount of excess combustion air [B].
large quantity of excess combustion air [C].
hydrocarbon fuel [D].
pulverised coal as fuel Answer: Option A
Explanation:
No answer description available for this question.