250+ TOP MCQs on Polycondensation and Answers

Chemical Industry Multiple Choice Questions on “Polycondensation”.

1. Which polymer is considered cheap effective and has excellent physical and electrical properties?
a) Phenolics
b) Epoxy resin
c) Polystyrene
d) PVC

Answer: a
Clarification: Phenolics are low cost polymers with excellent physical and electrical properties and fast curing characteristics. Pigments are added to enhance its colour.

2. How can we control the resin characteristics?
a) Basic solution catalyst
b) Acid solution catalyst
c) Solid catalyst
d) Adding acid

Answer: b
Clarification: General resin characteristics can be controlled by adding an acid solution catalyst with excess phenol which produces linear soluble thermoplastics.

3. What is epoxidation?
a) Addition of nitrogen atom across a C=C
b) Addition of sulphur atom across a C=C
c) Addition of oxygen atom across a C=C
d) Addition of oxygen atom across a C-C

4. How is epichlorohydrin condensed with other hydroxyl groups?
a) Resorcinol
b) Alcohol
c) Phenolphthalein
d) PVC

Answer: a
Clarification: Epichlorohydrin’s are condensed with other hydroxyl groups in compounds such as resorcinol, hydroquinone, ethylene glycol and glycerol.

5. Epichlorohydrin reins exhibit extreme versatility.
a) True
b) False

Answer: a
Clarification: Epoxy reins exhibit extreme volatility because of possible combinations of properties such as chemical stability, reactivity, excellent adhesion, good abrasion and electrical properties.

6. Epoxy polymers are manufactured by batch processing technique.
a) True
b) False

Answer: a
Clarification: Epoxy polymers are manufactured largely by batch processing because of low tonnage,
Multiple formulation marketing.

7. What is the main raw material in the manufacture of polyurethane?
a) Polyol
b) Glycol
c) Glycerol
d) Glycerine

Answer: a
Clarification: Polyols are used as main raw material in the manufacture of polyurethane foams along with methyl di-phenyl diisocyanate and toluene diisocyanate.