Rancidity of the fatty oil can be reduced by its__________________?
A. Decoloration
B. Hydrogenation
C. Oxidation
D. Purification
Chemical Process
Thermosetting plastic materials____________________?
Thermosetting plastic materials____________________?
A. Can be repeatedly melted
B. Is useful for melt casting
C. Cannot be melted after forming
D. Is useful for sning
Digestion of wood-base materials (for manufacture of pulp) is done to __________________?
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
Antibiotic____________________?
Antibiotic____________________?
A. Inhibits/destroys the growth of microorganisms
B. Is used as a pain reliever
C. Is an antimalarial
D. Is an anaesthetic
______________ is a thermosetting plastic?
______________ is a thermosetting plastic?
A. Polyvinyl chloride
B. Polythene
C. Bakelite
D. Teflon
Linde process of gas liquefaction employs__________________?
Linde process of gas liquefaction employs__________________?
A. Exchange of heat with colder stream
B. Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
C. Adiabatic expansion against a piston or in a turbine
D. Merely compressing the gas beyond its critical pressure
Chemical formula of ‘salt cake’ is____________________?
Chemical formula of ‘salt cake’ is____________________?
A. Na2SO4
B. CaSO4
C. MgSO4
D. BaSO4
In Kraft process of paper manufacture, white cooking liquor consists of caustic soda________________?
In Kraft process of paper manufacture, white cooking liquor consists of caustic soda________________?
A. Sodium sulphide & sodium carbonate
B. Sodium sulphite & sodium carbonate
C. Sodium sulphite & sodium sulphide
D. None of these
Enzymes are_________________?
Enzymes are_________________?
A. Proteins with high molecular weight (around 10,000)
B. Derived from living organisms
C. Catalyst for temperature sensitive reactions
D. All A, B. and C.
Catalyst used during the manufacture of ‘Vanaspati Ghee’ is ___________________?
Catalyst used during the manufacture of ‘Vanaspati Ghee’ is ___________________?
A. Zinc
B. Nickel
C. Platinum
D. Copper