Questions and answers for exam Preparation

MCQs

Total Questions : 1113 | Page 111 of 112 pages

Question 1101. Thermocol (expanded polystyrene) is not used for __________________?

Low temperature thermal insulation as in refrigerator and air conditioners
Acoustic control and ceiling for building
High temperature thermal insulation in furnaces
Packing of delicate electronic gadgets

Discuss Question

Answer: Option C. -> High temperature thermal insulation in furnaces
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1102. ______________ is an addition polymer ?

Nylon
Bakelite
Polythene
None of these

Discuss Question

Answer: Option C. -> Polythene
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1103. Liners of bags are usually made of ____________________?

Polythene
PVC
Polypropylene
Polyesters

Discuss Question

Answer: Option C. -> Polypropylene
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1104. Most commonly used rubber vulcanisation agent is __________________?

Sulphur
Bromine
Platinum
Alumina

Discuss Question

Answer: Option A. -> Sulphur
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1105. Pick out the wrong statement ?

Polymeric fibres are never produced by addition polymerisation
Property of tackiness is exhibited by uncured rubber
Sharp melting point is not observed in thermoplastic polymers
Polythene generally has an excellent resistance to ultra violet rays

Discuss Question

Answer: Option A. -> Polymeric fibres are never produced by addition polymerisation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1106. Buna-S is also called____________________?

Polyurethane
SBR
Teflon
Bakelite

Discuss Question

Answer: Option B. -> SBR
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1107. Which of the following is not a polymer of two monomers ?

Teflon
Bakelite
SBR
None of these

Discuss Question

Answer: Option A. -> Teflon
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1108. Pick out the wrong statement ?

Cold SBR is superior as compared to hot SBR
Polymerisation temperature can modify the properties of SBR
Production of cold SBR employs lower pressure as compared to that of hot SBR
None of these

Discuss Question

Answer: Option D. -> None of these
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1109. Pick out the wrong statement ?

Linear polymers are formed from bifunctional groups only and are normally thermoplastic
Cross-linked branched chain polymers are either elastometric or thermosetting
Branching in case of cross-linked polymers caused by small amount of impurities in bifunctional monomer formulation reduces its solubility and increas
Dibasic acids reacts with dihydric alcohols to give polyesters using addition polymerisation reaction

Discuss Question

Answer: Option D. -> Dibasic acids reacts with dihydric alcohols to give polyesters using addition polymerisation reaction
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1110. Pick out the wrong statement ?