The nitrogen content is minimum in
A.ammonium sulphate
B.nitrolime
C.ammonium chloride
D.ammonium nitrate
Category: Chemical Engineering Mcqs
In reversible adiabatic processes
A.pressure remains constant
B.enthalpy remains constant
C.temperature remains constant
D.heat transfer between system and its surroundings does not occur.
The most efficient agent for the absorption of SO3 is
A.80% H2SO4
B.98.5% H2SO4
C.90% H2SO4
D.20% oleum
A perfect black body is the one which
A.Absorbs all incident radiation
B.Reflects all incident radiation
C.Absorbs most of the incident radiation
D.Is coated with lamp black
A steam pipe is to be insulated by two insulating materials put over each other. For best results
A.Better matt. Over pipe and inferior over it
B.Inferior matt. Over pipe and better over it
C.Can be in any order
D.None of the above
Butane is flammable in concentrations from
A.4.1 to 74.2 %
B.5.3 to 14.0 %
C.1.6 to 8.5 %
D.3.2 to 12.5 %
In the manufacture of sulphuric acid by contact process platinum catalyst was previously used but suffers from
A.easy poisoning
B.fragility
C.high initial investment
D.all of these answers
Lewis number plays an important role in problems of
A.heat transfer only
B.mass transfer only
C.simultaneous heat and mass transfer
D.momentum transfer only
A photochemical reaction is
A.catalysed by light
B.initiated by light
C.accompanied with emission of light
D.used to convert heat energy into light
