Nitriding of steel is done in an electric furnace kept at about
A.1700?C
B.2200?C
C.510?C
D.125?C
Category: Chemical Engineering Mcqs
If the reactor temperature is wet process (strong sulphuric acid leaching) for the manufacture of orthophosphoric acid is kept about 100?C
A.undesirable CaSO4.
B.pyrophosphoric acid is formed
C.metaphosphoric acid is formed
D.none of these answers
The conditions under which three phases of matter can coexist in equilibrium, is known as
A.Absolute point
B.Basic point
C.Common point
D.Standard point
E.Triple point
Baleaching powder may be represented by the formula
A.Ca(CIO3)2
B.CaCI(OCI)
C.Ca(OCI)2
D.Ca(CIO4)2
The specific weight of a substance has the units
A.N/m3
B.kg/m3
C.N/m2
D.kg/m2
Which of the following is a minimum boiling azeotrope?
A.Iso-butanol-water
B.Molasses-water
C.Carbon disulphide-acetone
D.Acetone-chloroform
E.Benzene-toluene
Bimetallic thermometer works on the principle of
A.increase in electrical resistance with increase in temperature
B.linear thermal expansion of metals
C.volumetric expansion of metals
A wet solid is to be dried from 80% to 50% moisture (on wet basis). Calculate the moisture to be evaporated for 10 tonns of dried product?
A.375 kg
B.3750 kg
C.7500 kg
D.13,750 kg
E.37,500 kg
The ethanol-water azeotrope at 1 atm occurs at
A.89.4 mole per cent ethanol and 78.2?C
B.89.4 mole per cent water and 78.2?C
C.96.0 mole per cent ethanol and 78.2?C
D.96.0 mole per cent ethanol and 100?C
In a reaction, the threshold energy is equal to
A.activation energy
B.activation energy + normal energy of reactants
C.normal energy of reactants
D.activation energy – normal energy of reactants.
