Students may want to download NCERT MCQ Questions for Class 12 Chemistry Chapter 15 Polymers with Answers Pdf free download. These Polymers Class 12 MCQs Questions with Answers can help understand the concepts score better in your Class 12 Chemistry Exam, so make sure you practice these! Check out chapter-wise MCQ Questions for Class 12 Chemistry with Answers.
Polymers Class 12 MCQs Questions with Answers
Solve these Polymers Multiple Choice Questions of Class 12 Chemistry Chapter 15 MCQ, so as not to miss out on any concept from being clear about what they mean!
Question 1.
Polystyrene is a/an
(a) addition polymer
(b) thermoplastic polymer
(c) both (a) and (b)
(d) none of these.
Answer
Answer: (c) both (a) and (b)
Question 2.
Cellulose is a
(a) natural polymer
(b) semi-synthetic polymer
(c) synthetic polymer
(d) none of these.
Answer
Answer: (a) natural polymer
Question 3.
Buna-S is a/an
(a) addition polymer
(b) condensation polymer
(c) both (a) and (b)
(d) none of these.
Answer
Answer: (a) addition polymer
Question 4.
Bakelite is a
(a) addition polymer
(b) thermoplastic polymer
(c) elastomer polymer
(d) thermosetting polymer.
Answer
Answer: (d) thermosetting polymer.
Question 5.
Which of the following is called a polyamide?
(a) Rayon
(b) Nylon
(c) Terylene
(d) Bakelite
Answer
Answer: (b) Nylon
Question 6.
Which is a condensation polymer?
(a) PVC
(b) Teflon
(c) Bakelite
(d) None of these
Answer
Answer: (c) Bakelite
Question 7.
Bakelite is a product of the reaction between
(a) Formaldehyde and NaOH
(b) Aniline and Urea
(c) Phenol and Methanol
(d) Phenol and Formaldehyde.
Answer
Answer: (d) Phenol and Formaldehyde.
Question 8.
Vulcanisation makes rubber
(a) more elastic
(b) soluble in inorganic solvent
(c) crystalline
(d) none of these.
Answer
Answer: (a) more elastic
Question 9.
Neoprene is a polymer of
(a) Chloroprene
(b) Isoprene
(c) Styrene
(d) Ethene.
Answer
Answer: (a) Chloroprene
Question 10.
The monomer unit of PVC is
(a) vinyl chloride
(b) ethylene
(c) chloroprene
(d) acrylonitrile.
Answer
Answer: (a) vinyl chloride
Question 11.
Which of the following is not applicable to Nylon-6, 6?
(a) Synthetic polymer
(b) Fibre
(c) Addition polymer
(d) Condensation polymer
Answer
Answer: (c) Addition polymer
Question 12.
In the following, thermosetting polymer is
(a) Bakelite
(b) Polythene
(c) Polyester
(d) Buna -N.
Answer
Answer: (a) Bakelite
Question 13.
Monomer of teflon is
(a) CF2 = CF2
(b) CH2 = CHCN
(c) CH2 = CH2
(d) C6H5CH = CH2
Answer
Answer: (a) CF2 = CF2
Question 14.
The incorrect statement about LDP is:
(a) It is obtained through the free radical addition of ethene.
(b) It consists of linear molecules.
(c) It is obtained by the H-atom abstraction.
(d) Peroxide is used as an initiator.
Answer
Answer: (b) It consists of linear molecules.
Assertion and Reason Type Questions
The questions given below consist of an assertion and a reason. Use the following key to choose the appropriate answer.
(a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
(c) Assertion (A) is correct, Reason (R) is wrong statement.
(d) Assertion (A) is wrong, but Reason (R) is correct statement.
Question 15.
Assertion: Rayon is a semi-synthetic polymer and is taken as a better choice than cotton fabric.
Reason: Mechanical and aesthetic properties of cellulose can be improved by acetylation.
Answer
Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
Question 16.
Assertion: Most of the synthetic polymers are not biodegradable.
Reason: Polymerisation process induces toxic character in organic molecules.
Answer
Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.
Question 17.
Assertion: Olefinic monomers undergo addition polymerisation.
Reason: Polymerisation of vinyl chloride is initiated by peroxides/persulphates.
Answer
Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
Question 18.
Assertion: Polyamides are best used as fibres because of high tensile strength.
Reason: Strong intermolecular forces (like hydrogen bonding within polyamides) lead to close packing of chains and increase the crystalline character, hence, provide high tensile strength to polymers.
Answer
Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
Question 19.
Assertion: For making rubber synthetically, isoprene molecules are polymerised.
Reason: Neoprene (a polymer of chloroprene) is a synthetic rubber.
Answer
Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.
Question 20.
Assertion: Network polymers are thermosetting.
Reason: Network polymers have high molecular mass.
Answer
Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
Question 21.
Assertion: Polytetrafluoroethene is used in making non-stick cookwares.
Reason: Fluorine has highest electronegativity
Answer
Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
This NCERT MCQ Questions for Class 12 Chemistry Chapter 15 Polymers with Answers Pdf free download has been put together to help students understand the CBSE Class 12 Chemistry Polymers MCQs Multiple Choice Questions with Answers. Hope you found this helpful!