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Which of the following is NOT a natural polymer?

Glycosidic linkage between \( C_1 \) of \( \alpha \)-glucose and \( C_2 \) of \( \beta \)-fructose is found in:

Given below are two statements, one is Assertion (A) and other is Reason (R).
Assertion (A) : Natural rubber is a linear polymer of isoprene called cis-polyisoprene with elastic properties.
Reason (R) : The cis-polyisoprene molecules consist of various chains held together by strong polar interactions with coiled structure.
In the light of the above statements, choose the correct one form the options given below:

Which is true about Buna-N?

L-isomer of a compound ‘A’ \( \mathrm{(C_4H_8O_4)} \) gives a positive test with \( [\mathrm{Ag(NH_3)_2}]^{+} \). Treatment of ‘A’ with acetic anhydride yields triacetate derivative. Compound ‘A’ produces an optically active compound (B) and an optically inactive compound (C) on treatment with bromine water and \( \mathrm{HNO_3} \) respectively. Compound (A) is:

Match List \(-\) I with List \(-\) II:

Choose the correct answer from the options given below:

Which of the following is not an example of a condensation polymer?

Which one of the following is NOT a copolymer?

Melamine polymer is formed by the condensation of:

10.

The Novolac polymer has mass of \( 963 \, \text{g} \). The number of monomer units present in it are ___________.

11.

In alanylglycylleucylalanylvaline, the number of peptide linkages is __________.

12.

The polymer, which can be stretched and retains its original status on releasing the force is:

13.

Vulcanization of rubber is carried out by heating a mixture of

14.

Match List-I with List-II.

List-I (Polymer)	List-II (Used for items)
(A) Nylon 6, 6	(I) Buckets
(B) Low density polythene	(II) Non-stick utensils
(C) High density polythene	(III) Bristles of brushes
(D) Teflon	(IV) Toys

Choose the correct answer from the options given below:

15.

A polysaccharide 'X' on boiling with dil \( \mathrm{H_2SO_4} \) at \( 393 \, \text{K} \) under \( 2\text{-}3 \, \text{atm} \) pressure yields 'Y'. 'Y' on treatment with bromine water gives gluconic acid. 'X' contains \( \beta \)-glycosidic linkages only. Compound 'X' is:

16.

Which of the following sets are correct regarding polymer?

(a) Copolymer: Buna-S (b) Condensation polymer: Nylon-\( 6, 6 \)

(c) Fibres: Nylon-\( 6, 6 \) (d) Thermosetting polymer: Terylene

(e) Homopolymer: Buna-N

17.

Match List I with List II.

Choose the correct answer from the options given below:

18.

Given below are two statements: one is labelled as Assertion A and the other labelled as Reason R.
Assertion A: Dacron is an example of polyester polymer.
Reason R: Dacron is made up of ethylene glycol and terephthalic acid monomers.
In the light of the above statements, choose the most appropriate answer from the option given below:

19.

Which of the following is an example of polyester?

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JEE Main 2022 25th July Evening Shift

Glycosidic linkage between \( C_1 \) of \( \alpha \)-glucose and \( C_2 \) of \( \beta \)-fructose is found in:

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