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.Management Sciences
Category: Chemical Process
Bordeaux mixture is a/an________________?
A. Fertiliser
B. Inorganic fungicide
C. Insecticide
D. Explosive
The type of high refractive index glass used in optical instruments is _____________ glass?
A. Pyrex
B. Flint
C. Crookes
D. None of these
The main use of HCl is in the___________________?
A. Drilling of petroleum wells and pickling of steel sheets
B. Manufacture of cationic detergent
C. Treatment of spent fuel of nuclear reactor
D. None of these
Commercial production of soda ash by Solvay process requires limestone, ___________________ as raw materials?
A. Coke and sand
B. Brine and coal
C. Coke and caustic soda
D. None of these
Soaps remove dirt by ____________________?
A. Increasing the surface tension
B. Decreasing wettability
C. Supplying hydrophilic group
D. None of these
The manufacture of Kraft pulp is done by a/an _________________ process?
A. Alkaline
B. Acidic
C. Neutral
D. None of these
Unsaturated oils compared to saturated oils have___________________?
A. Lower melting point & higher reactivity to oxygen
B. Higher melting point & higher reactivity to oxygen
C. Lower melting point & lower reactivity to oxygen
D. Higher melting point & lower reactivity to oxygen
Catalytic oxidation-dehydrogenation of methyl alcohol produces__________________?
A. Formaldehyde
B. Phenol
C. Acetone
D. Maleic anhydride
Reaction of calcium carbide with water produces a gas, which is used_________________?
A. As an illuminant
B. For metal cutting/welding
C. Both A. & B.
D. Neither A. nor B.
Roasting of metallurgical ores is done mainly to ___________________?
A. Dehydrate it
B. Sinter the ore
C. Remove CO2 & H2O
D. Remove arsenic & sulphur
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