Polymers Practice Questions
JEE · Chemistry · 1159 free MCQs with instant results and detailed explanations.
1159
Total
248
Easy
499
Medium
412
Hard
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Topics in Polymers
Natural Polymers
238
Biodegradable Polymers
235
Condensation Polymers
221
Addition Polymers
215
Types of Polymers
250
Sample Questions from Polymers
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which type of polymer is formed through the addition of monomers with unsaturated bonds?
A.
Addition Polymer
B.
Condensation Polymer
C.
Natural Polymer
D.
Semi-synthetic Polymer
Show Answer & Explanation
Correct Answer: A
Addition polymers are formed by the polymerization of monomers that contain double or triple bonds, allowing them to add together to form long chains.
Q2
Easy
Which of the following is a characteristic of condensation polymers?
A.
They usually release small molecules as byproducts.
B.
They are always crystalline.
C.
They require heat to initiate polymerization.
D.
They cannot be thermally recycled.
Show Answer & Explanation
Correct Answer: A
Condensation polymers are formed by the reaction between monomers with the elimination of small molecules like water or methanol.
Q3
Easy
Which of the following is NOT a natural polymer?
A.
Cellulose
B.
DNA
C.
Nylon
D.
Starch
Show Answer & Explanation
Correct Answer: C
Nylon is a synthetic polymer, while cellulose, DNA, and starch are all natural polymers found in nature.
Q4
Medium
Which of the following types of polymers is formed through the process of condensation polymerization?
A.
Nylon-66
B.
Polystyrene
C.
Polyethylene
D.
Polyvinyl chloride
Show Answer & Explanation
Correct Answer: A
Nylon-66 is a condensation polymer formed by the reaction of hexamethylenediamine and adipic acid, releasing water. In contrast, the other options are addition polymers formed by the simple addition of monomers.
Q5
Medium
Which of the following statements correctly describes thermosetting polymers?
A.
They can be remolded upon heating.
B.
They are linear or branched in structure.
C.
They form irreversible cross-links during curing.
D.
They have a low melting point.
Show Answer & Explanation
Correct Answer: C
Thermosetting polymers undergo curing to form irreversible cross-links which prevent them from being remolded. This characteristic distinguishes them from thermoplastics, which can be reformed with heat.
Q6
Medium
If a certain polymer is made up of the monomer 2-methylpropene, which of the following properties is most likely to be exhibited by the resulting polymer?
A.
Linear structure with high flexibility
B.
Branched structure with low density
C.
Crystalline structure with high melting point
D.
Amorphous structure with good impact resistance
Show Answer & Explanation
Correct Answer: D
The polymer made from 2-methylpropene is likely to be amorphous due to the branched nature of the polymer chains, which provides good impact resistance and lower crystallinity.
Q7
Medium
Which of the following is a characteristic feature of thermoplastics?
A.
Reversible softening on heating
B.
Irreversible hardening
C.
Cross-linked structure
D.
High thermal stability
Show Answer & Explanation
Correct Answer: A
Thermoplastics can be reshaped upon heating, making them versatile for various applications.
Q8
Hard
Which of the following statements is true regarding the difference between addition and condensation polymers?
A.
Addition polymers are formed by the elimination of small molecules.
B.
Condensation polymers involve the joining of monomers with the release of water.
C.
Addition polymers have a higher molecular weight than condensation polymers.
D.
Condensation polymers are always thermoplastics.
Show Answer & Explanation
Correct Answer: B
Condensation polymers are formed through a reaction where monomers join together with the elimination of a small molecule, typically water. Addition polymers do not involve such elimination.
Q9
Hard
A polymer is formed by the polymerization of a monomer that has a molecular weight of 100 g/mol. If the degree of polymerization is 50, what is the molecular weight of the polymer?
A.
5000 g/mol
B.
100 g/mol
C.
4000 g/mol
D.
2000 g/mol
Show Answer & Explanation
Correct Answer: A
The molecular weight of a polymer can be calculated as the molecular weight of the monomer multiplied by the degree of polymerization. Here, 100 g/mol * 50 = 5000 g/mol.
Q10
Hard
Which of the following polymers is classified as a thermosetting polymer?
A.
Polyethylene
B.
Epoxy resin
C.
Polystyrene
D.
Nylon
Show Answer & Explanation
Correct Answer: B
Epoxy resins are thermosetting polymers, which means they undergo a curing process and cannot be remelted. In contrast, polyethylene and polystyrene are thermoplastics.
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Polymers — JEE Chemistry Practice Questions Online
This page contains 1159 practice MCQs for the chapter Polymers in JEE Chemistry. The questions are organized by difficulty — 248 easy, 499 medium, 412 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 5 topics, giving you comprehensive coverage of the entire chapter.