Contact process for the manufacture of sulphuric acid yields
A.80% H2SO4 only
B.98% H2SO4 and higher
C.95% H2SO4 only
D.90% H2SO4 only
Category: Chemical Engineering Mcqs
Annual depreciation costs are constant
A.when the straight-line method is used
B.when the sum-of-the-years-digits method is used
C.when the declining-balance method is used
D.none of the above
Which of the following petroleum products has maximum viscosity at a given temperature?
A.Motor spirit
B.Furnace oil
C.High speed diesel oil
D.Kerosine
The lowest temperature at which a solid fuel produces enough vapours to support continuous combustion is called
A.flash point
B.kindling temperature
C.burning temperature
D.none of the above
The unit of energy is the same as the unit of
A.power
B.work
C.entropy
D.pressure
Diaphragm electrolytie cell produces
A.70% NaOH solution
B.60% NaOH solution
C.98.5% NaOH solution
D.10-12% NaOH solution
If a gas is in the flammable range of concentration
A.it will not explode at all
B.it will explode always without requiring heat energy
C.it will not explode unless a source of heat starts the reaction
D.none of these answers
In wet process (Hydrochloric acid leaching) for the manufacture of orthophosphoric acid solvent used for the extraction of H3PO4 from CaCI2 solution is
A.benzene
B.butanol
C.methyl ethyl ketone
D.hexane
A thin circulr disc has a concentric hole in it. On heating the diameter of hole will
A.increase
B.decrease
C.remain constant
