Related Questions

Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in municipal sewers may cause
A Explosion
B Non biodegradable foam
C Undesirable plant growth
D Corrosion
The gas evolved in sewers is
A Carbondioxide
B Hydrogen sulphide
C Methane
D All of these
In sewers the gas generally found, is
A Hydrogen sulphide (H2S)
B Carbon dioxide (CO2)
C Methane (CH4)
D All the above
Which of the following gas causes explosion in coal mines?
A Carbon dioxide
B Nitrogen
C Butane
D Methane
For large sewers, maximum distance between manholes may be
A 50 m
B 100 m
C 200 m
D 300 m
Setting out the alignments of sewers may start from
A City
B Out-fall
C Tail end
D Any point
The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be
A 2M
B $$\frac{{\text{M}}}{2}$$
C M
D $$\frac{{\text{M}}}{4}$$
দুটি এক-পরমাণুক আদর্শ গ্যাস পরস্পরের সাথে তাপীয় সাম্যাবস্থায় আছে। A গ্যাস m ভরের অণু দ্বারা গঠিত, এবং B গ্যাস 4m ভরের অণু দ্বারা গঠিত। A গ্যাসের আয়তন ৪ গ্যাসের আয়তনের দ্বিগুণ। এদের চাপের অনুপাত PA / PB কত? (Two monoatomic ideal gases are in thermal equilibrium with each other. Gas A is composed of molecules with mass m while gas B is composed of molecules with mass 4m. The volume of gas A is twice that of gas B. What it the ratio of their pressures PA / PB ?)
A 1/4
B 1/2
C 1
D 2
The quantity of liquid waste which flows in sewers during the period of rainfall, is known
A Sanitary sewage
B Industrial waste
C Storm sewage
D None of these
Which one of the following tunneling methods is used for laying underground sewers?
A Needle beam method
B Army method
C German method
D Italian method

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