Related Questions

The gas which may cause explosion in sewers, is
A Carbondioxide
B Methane
C Ammonia
D Carbon monoxide
In sewers the gas generally found, is
A Hydrogen sulphide (H2S)
B Carbon dioxide (CO2)
C Methane (CH4)
D All the above
The principal gas evolved from sludge digestion tank is
A CO
B CO2
C CH4
D N2
When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is
A Hydrogen
B Oxygen
C Carbon dioxide
D All of them
The main type of sludge gas evolved during sewage treatment in Imhoff tank is
A CO2
B CH4
C CO
D H2
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 self cleansing velocity for all sewers in India is usually
A Less than 1.0 m/sec
B 1.0 m/sec to 1.2 m/sec
C 1.5 m/sec to 2.0 m/sec
D 3.0 m/sec to 3.5 m/sec
The main disadvantage of cement concrete sewers is
A Less strength
B Difficulty in construction
C Difficulty in transportation due to heavy weight
D Less life
A sewer that receives the discharge of a number of house sewers is called
A House sewer
B Lateral sewer
C Intercepting sewer
D Sub-main sewer

Next steps