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1
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
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
(a) - (IV), (b) - (III), (c) - (II), (d) - (I)
B
(a) - (III), (b) - (IV), (c) - (I), (d) - (II)
C
(a) - (III), (b) - (IV), (c) - (II), (d) - (I)
D
(a) - (IV), (b) - (III), (c) - (I), (d) - (II)
2
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
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:
A
Both (A) and (R) are correct and (R) is the correct explanation of (A).
B
Both (A) and (R) are correct but (R) is not the correct explanation of (A).
C
(A) is correct but (R) is wrong.
D
(A) and (R) both are wrong.
3
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which one of the following polymers is not obtained by condensation polymerisation?
A
Bakelite
B
Nylon 6
C
Buna-N
D
Nylon 6, 6
4
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which polymer has 'chiral' monomer(s) ?
A
Nylon 6,6
B
Buna-N
C
PHBV
D
Neoprene
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