Search
.Management Sciences
Category: Chemical Process
Heating of _______________ to 120°C, produces plaster of paris ?
A. Blue vitriol
B. Gypsum
C. Calcium silicate
D. Calcium sulphate
Starting raw material for the manufacture of Maleic anhydride is___________________?
A. n-butene
B. Benzene
C. Either A. or B.
D. Neither A. nor B.
The chamber process is______________________?
A. Preferred over contact process for producing 98 to 100% H2SO4 and various oleums
B. Non-catalytic and operates only on pyrites
C. A batch process for directly producing high strength (98 to 100%) H2SO4
D. None of these
Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils________________?
A. Cause cholesterol build up and blood clotting
B. Are prone to rancid oxidation
C. Always contain some amount of nickel (as their complete removal is very difficult)
D. Have affinity to retain harmful sulphur compounds
The amount of benzene present in pure Benzol is about _______________ percent ?
A. 30
B. 50
C. 70
D. 90
Dehydrogenation of Isopropanol produces ____________________?
A. Propyl alcohol
B. Acetone
C. Trichloroethylene
D. Formaldehyde
Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because__________________?
A. Its calorific value is very less
B. Tar neutralises the residual acids present in pitch
C. It reduces viscosity and imparts fluidity for its transportation through pipelines at economic
pressure drop
D. All A, B. and C.
High temperature carbonisation of coal produces _____________________ ?
A. Inferior coke compared to low temperature carbonisation
B. Less of gases compared to liquid products
C. Larger quantity of tar compared to low temperature carbonisation
D. None of these
Solvent used for extraction of oil is_____________________?
A. Hexane
B. Methyl ethyl ketone
C. Furfural
D. None of these
Digestion of wood-base materials (for manufacture of pulp) is done to __________________?
A. Remove lignin
B. Produce long fibres
C. Prevent deterioration on storage
D. None of these
Recent Comments