The process involved in converting rubber into a thin sheet or coating it on fabric is called ___________________?

Related Mcqs:

1. 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.

2. Solvay process as compared to dual process (i.e. modified Solvay process) ?

   A. Can use low grade brine
   B. Has less corrosion problems
   C. Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl
   D. Both B. and C.

3. Nitrile rubber is produced by the polymerisation of__________________?

   A. Acrylonitrile and butadiene
   B. Acrylonitrile and styrene
   C. Isobutylene and isoprene
   D. None of these

4. 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.

5. ____________________ of rubber decreases after its vulcanisation?

   A. Resistance to the action of organic solvent
   B. Tackiness
   C. Maximum service temperature
   D. Tensile strength

6. Main constituents of natural rubber is____________________?

   A. Polystyrene
   B. Polyisoprene
   C. Polybutadiene
   D. Polychlorophrene

7. Most commonly used rubber vulcanising agent is___________________?

   A. Sulphur
   B. Bromine
   C. Platinum
   D. Alumina

8. 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

9. A unit operation is exemplified by the process of ___________________?

   A. Reduction
   B. Desorption
   C. Nitration
   D. Combustion

10. Rotary kiln is not involved in the production of___________________?

    A. Cement
    B. Lime from limestone
    C. Slaked lime from quick lime
    D. None of these