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48
MCQ (Single Correct Answer)

Assertion (A) Olefinic monomers undergo addition polymerisation.

Reason (R) Polymerisation of vinyl chloride is initiated by peroxides/persulphates.

A
Assertion and Reason both are correct statement But reason does not explain Assertion.
B
Assertion and Reason both are correct statements and Reason explains the Assertion.
C
Both assertion and reason are wrong statements.
D
Assertion is correct statement and Reason is wrong statement.
E
Assertion is wrong statement and reason is correct statement.
49
MCQ (Single Correct Answer)

Assertion (A) Polyamides are best used as fibres because of high tensile strength.

Reason (R) 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.

A
Assertion and Reason both are correct statement But reason does not explain Assertion.
B
Assertion and Reason both are correct statements and Reason explains the Assertion.
C
Both assertion and reason are wrong statements.
D
Assertion is correct statement and Reason is wrong statement.
E
Assertion is wrong statement and reason is correct statement.
50
MCQ (Single Correct Answer)

Assertion (A) For making rubber synthetically, isoprene molecules are polymerised.

Reason (R) Neoprene (a polymer of chloroprene) is a synthetic rubber.

A
Assertion and Reason both are correct statement But reason does not explain Assertion.
B
Assertion and Reason both are correct statements and Reason explains the Assertion.
C
Both assertion and reason are wrong statements.
D
Assertion is correct statement and Reason is wrong statement.
E
Assertion is wrong statement and reason is correct statement.
51
MCQ (Single Correct Answer)

Assertion (A) Network polymers are thermosetting.

Reason (R) Network polymers have high molecular mass.

A
Assertion and Reason both are correct statement But reason does not explain Assertion.
B
Assertion and Reason both are correct statements and Reason explains the Assertion.
C
Both assertion and reason are wrong statements.
D
Assertion is correct statement and Reason is wrong statement.
E
Assertion is wrong statement and reason is correct statement.
52
MCQ (Single Correct Answer)

Assertion (A) Polytetrafluoroethene is used in making non-stick cookwares.

Reason (R) Fluorine has highest electronegativity.

A
Assertion and Reason both are correct statement But reason does not explain Assertion.
B
Assertion and Reason both are correct statements and Reason explains the Assertion.
C
Both assertion and reason are wrong statements.
D
Assertion is correct statement and Reason is wrong statement.
E
Assertion is wrong statement and reason is correct statement.
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