JEE Main 2021 (Online) 24th February Evening Slot | Polymers Question 39 | Chemistry

PREVIOUS NEXT

JEE Main 2021 (Online) 24th February Evening Slot

MCQ (Single Correct Answer)

-1

In polymer Buna-S : 'S' stands for :

Sulphur

Styrene

Strength

Sulphonation

JEE Main 2021 (Online) 24th February Morning Slot

MCQ (Single Correct Answer)

-1

Match List I with List II.

List I (Monomer Unit)	List II (Polymer)
(a) Caprolactum	(i) Natural rubber
(b) 2-Chloro-1, 3-butadiene	(ii) Buna-N
(c) Isoprene	(iii) Nylon 6
(d) Acrylonitrile	(iv) Neoprene

Choose the correct answer from the options given below:

(a) → (iv), (b) → (iii), (c) → (ii), (d) → (i)

(a) → (iii), (b) → (iv), (c) → (i), (d) → (ii)

(a) → (ii), (b) → (i), (c) → (iv), (d) → (iii)

(a) → (i), (b) → (ii), (c) → (iii), (d) → (iv)

JEE Main 2020 (Online) 6th September Evening Slot

MCQ (Single Correct Answer)

-1

The correct match between Item - I and Item - II is :

Item - I	Item - II
(a) Natural rubber	(I) 1, 3-butadiene + styrene
(b) Neoprene	(II) 1, 3-butadiene + acrylonitrile
(c) Buna-N	(III) Chloroprene
(d) Buna-S	(IV) Isoprene

(a) - (IV), (b) - (III), (c) - (II), (d) - (I)

(a) - (III), (b) - (IV), (c) - (I), (d) - (II)

(a) - (III), (b) - (IV), (c) - (II), (d) - (I)

(a) - (IV), (b) - (III), (c) - (I), (d) - (II)

JEE Main 2020 (Online) 6th September Morning Slot

MCQ (Single Correct Answer)

-1

Consider the Assertion and Reason given below.

Assertion (A) : Ethene polymerized in the presence of Ziegler Natta Catalyst at high temperature and pressure is used to make buckets and dustbins.

Reason (R) : High density polymers are closely packed and are chemically inert.

Choose the correct answer from the following:

Both (A) and (R) are correct and (R) is the correct explanation of (A).

Both (A) and (R) are correct but (R) is not the correct explanation of (A).

(A) is correct but (R) is wrong.

(A) and (R) both are wrong.

PREVIOUS NEXT