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.Management Sciences
Category: Polymer Technology
Nylon-6 as compared to nylon-66 is_________________?
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A. Harder
B. More abrasion resistant
C. Having higher melting point
D. None of these
Pick out the wrong statement ?
A. Addition polymers are generally formed by chain growth polymerisation
B. Condensation polymers are generally formed by step growth polymerisation
C. Teflon is formed by step growth polymerisation
D. Bakelite is formed by step growth polymerisation
Which of the following polymers is used for making a non stick coating on frying pans ?
A. Bakelite
B. Teflon
C. Perspex
D. PVC
Molecular weight of polymers are in the range of__________________?
A. 10 to 103
B. 102-107
C. 107-109
D. 109-1011
Which of the following is generally not used as eord for synthetic rubber tyre casing ?
A. Dacron
B. Nylon
C. Cellulose
D. None of these
Low density polythene as compared to high density polythene is____________________?
A. Harder
B. Tougher
C. Chemically inert
D. More flexible
Cation exchange resins used in water treatment is made from _____________ resin?
A. Urea formaldehyde
B. Epoxy
C. Amino
D. Phenolic
Poly-methyl-methacrylate, which is an acrylic resin, is also called ___________________?
A. Thiokol
B. Plexiglass or Lucite
C. Dacron
D. Teflon
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