Chemical Engineering Mcqs

Dacron (or Treylene) fibres as compared to nylon fibres have_____________________?

• (A)  Better heat & acid resistant properties
• (B)  Poorer resistance to alkalis
• (C)  Poorer dyeability
• (D)  All

Answer

Submitted By :Ali Uppal

The major component of acrylic fibers is__________________?

• (A)  Polyamides
• (B)  Polyolefins
• (C)  Polyacrylonitrile
• (D)  Polyesters

Answer

Submitted By :Ali Uppal

Low density polythene as compared to high density polythene is____________________?

• (A)  Harder
• (B)  Tougher
• (C)  Chemically inert
• (D)  More flexible

Answer

Submitted By :Ali Uppal

Hot drink (e.g., tea) cups are usually made of _____________________?

• (A)  Polystyrene
• (B)  Polythene
• (C)  Polypropylene
• (D)  PVC

Answer

Submitted By :Ali Uppal

The inter particle forces between linear chains in nylon-66 are ______________ bonds?

• (A)  Hydrogen
• (B)  Covalent
• (C)  Ionic
• (D)  None of these

Answer

Submitted By :Ali Uppal

Polypropylene is preferred to polythene, because the former is ____________________?

• (A)  Non-inflammable
• (B)  Harder
• (C)  Stronger
• (D)  Both

Answer

Submitted By :Ali Uppal

Polystyrene is a light, transparent, thermoplastic material used for making __________________?

• (A)  Toys and combs
• (B)  Packaging bags
• (C)  Non-sticking utensils
• (D)  Electrical insulation

Answer

Submitted By :Ali Uppal

Rayon is superior to cotton in making gauge for wound treatment, because rayon_____________________?

• (A)  Is a synthetic polymer
• (B)  Does not stick to the wound unlike cotton
• (C)  Can absorb over 90% of its own weight of water
• (D)  Both

Answer

Submitted By :Ali Uppal

The repeating units of PTFE are___________________?

• (A)  Cl2CH-CH3
• (B)  F2 C = CF2
• (C)  F3 C-CF3
• (D)  FClC = CF2

Answer

Submitted By :Ali Uppal

Condensation polymerisation is not involved in the manufacture of_________________?

• (A)  Teflon
• (B)  Polythene
• (C)  Terylene
• (D)  Nylon

Answer

Submitted By :Ali Uppal