A. Sulphur
B. Bromine
C. Platinum
D. Alumina
Related Mcqs:
- Styrene-butadiene-rubber (SBR) as compared to natural rubber has________________?
A. Poorer tensile strength
B. Poorer resistance to oxidation
C. Greater amount of heat build-up under heavy loading
D. All A , B. and C. - The most commonly used substance to speed up the sedimentation of sewage is___________________?
A. Lime
B. Sulphuric acid
C. Chlorine
D. Sodium bisulphite - Which is the main reducing agent during production of iron from iron ore in a blast furnace ?
A. C
B. CO
C. CO2
D. H2 - The end bleaching agent used to move last traces of colour bodies from the pulp is ____________________?
A. Chlorine dioxide (ClO2)
B. MgO
C. SO2 gas
D. Mercaptans - Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc ?
A. Sodium silicate
B. Sodium borate
C. Sodium tripolyphosphate (STPP)
D. Caustic soda - Nitrile rubber is produced by the polymerisation of__________________?
A. Acrylonitrile and butadiene
B. Acrylonitrile and styrene
C. Isobutylene and isoprene
D. None of these - Starting material for the production of styrene butadiene rubber (SBR) is________________?
A. Ethyl alcohol
B. Ethylene
C. Both A. & B.
D. Neither A. nor B. - ____________________ of rubber decreases after its vulcanisation?
A. Resistance to the action of organic solvent
B. Tackiness
C. Maximum service temperature
D. Tensile strength - Main constituents of natural rubber is____________________?
A. Polystyrene
B. Polyisoprene
C. Polybutadiene
D. Polychlorophrene - The process involved in converting rubber into a thin sheet or coating it on fabric is called ___________________?
A. Extrusion
B. Mastication
C. Calendaring
D. Vulcanisation
