A. Extrusion
B. Mastication
C. Calendaring
D. Vulcanisation
Related Mcqs:
- Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex ?
A. Ammonium alum
B. Potassium alum
C. Both A. & B.
D. Neither A. nor B. - Styrene butadiene rubber (SBR) as compared to natural rubber has_______________?
A. Poor tensile strength
B. Poorer resistance
C. Greater amount of heat build up heavy loading
D. All A., B. and C. - Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxidant used in rubber ?
A. Carbon
B. Alkylated diphenyl amine
C. Thiokol
D. Magnesium - Which of the following is the most important rubber compounding ingredient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness ?
A. Phosphorous
B. Carbon black
C. Pine oil
D. Rosin - In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of__________________?
A. Cross linked polystyrene
B. Phenol formaldehyde resins
C. Polyesters
D. Polyamides - Which of the following polymers is used for making a non stick coating on frying pans ?
A. Bakelite
B. Teflon
C. Perspex
D. PVC - Rexine (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten_______________?
A. Teflon
B. Bakelite
C. SBR
D. PVC - Polymerisation process in which two or more monomers of chemically different nature take part is called__________________?
A. Copolymerisation
B. Addition polymerisation
C. Chain polymerisation
D. None of these - Paper like thin plastic articles can be produced by_________________?
A. Blow moulding
B. Vacuum thermo forming
C. Injection moulding
D. None of these - The rate controlling step in the manufacture of silicone rubber is the_________________?
A. Polymer termination step
B. Condensation of siloxane to silicone
C. Initial hydrolysis of silicone monomer
D. None of these
