Related Questions

The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.
A 60
B 30
C 95
D 100
Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at
A Rourkela (under SAIL)
B Bokaro (under SAIL)
C Sindri (under FCI)
D Baroda (under G.S.F.C.)
Cooling water is required for following equipment in ammonia absorption plant
A Condenser
B Evaporator
C Absorber
D Condenser, absorber and separator (rectifier)
In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively
A Water and water
B Water and lithium bromide
C Ammonia and lithium bromide
D Ammonia and water
In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in
A Condenser
B Evaporator
C Absorber
D None of these
During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the
A Gas film
B Liquid film
C Liquid-gas interface
D None of these
Ammonia absorption refrigeration cycle requires
A Very little work input
B Maximum work input
C Nearly same work input as for vapour compression cycle
D Zero work input
The evolution of heat of solution takes place in ammonia absorption plant when
A Ammonia vapour goes into solution
B Ammonia vapour is driven out of solution
C Lithium bromide mixes with ammonia
D Weak solution mixes with strong solution
Allowable pressure on high pressure side or ammonia absorption system is of the order of
A Atmospheric pressure
B Slightly above atmospheric pressure
C 24 bars
D 56 bars
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.
A CO2
B SO2
C NH3
D None of these

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