Chemical Engineering Mcqs

Most of the plastics are safe to be used upto a maximum temperature of ______________ °C?

• (A)  100
• (B)  150
• (C)  350
• (D)  450

Answer

Submitted By :Ali Uppal

Contact lenses for eyes are made of Perspex, which is nothing but_______________?

• (A)  poly-methyl-methacrylate
• (B)  Polystyrene
• (C)  Unsaturated polyester
• (D)  Polypropylene

Answer

Submitted By :Ali Uppal

Buna-S is also called____________________?

• (A)  Polyurethane
• (B)  SBR
• (C)  Teflon
• (D)  Bakelite

Answer

Submitted By :Ali Uppal

Which of the following is not a polymer of two monomers ?

• (A)  Teflon
• (B)  Bakelite
• (C)  SBR
• (D)  None of these

Answer

Submitted By :Ali Uppal

Thermocol (expanded polystyrene) is not used for __________________?

• (A)  Low temperature thermal insulation as in refrigerator and air conditioners
• (B)  Acoustic control and ceiling for building
• (C)  High temperature thermal insulation in furnaces
• (D)  Packing of delicate electronic gadgets

Answer

Submitted By :Ali Uppal

Most commonly used rubber vulcanisation agent is __________________?

• (A)  Sulphur
• (B)  Bromine
• (C)  Platinum
• (D)  Alumina

Answer

Submitted By :Ali Uppal

Liners of bags are usually made of ____________________?

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

Answer

Submitted By :Ali Uppal

______________ is an addition polymer ?

• (A)  Nylon
• (B)  Bakelite
• (C)  Polythene
• (D)  None of these

Answer

Submitted By :Ali Uppal

Which of the following is an elastomer ?

• (A)  Thiokol
• (B)  Phenol formaldehyde
• (C)  Urea formaldehyde
• (D)  Polystyrene

Answer

Submitted By :Ali Uppal

Plastic tubes & pipes are generally made by ______________ moulding?

• (A)  Injection
• (B)  Transfer
• (C)  Extrusion
• (D)  Compression

Answer

Submitted By :Ali Uppal