HARD
Earn 100

What is correct regarding natural rubber?
1. It is cis polyisoprene
2. It is amorphous in nature
3. It has syndiotactic stereochemistry
4. Molecules of rubber have coiled conformation

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Important Questions on Polymers

HARD
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
On complete hydrogenation, natural rubber produces
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Natural rubber has:
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Natural rubber has unit in its structure.
MEDIUM
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Which statement is correct?
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Neoprene is a
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
The structure of Neoprene is :
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Which one of the following monomer is used to prepare Neoprene?
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Natural rubber is a polymer of
MEDIUM
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Which of the following monomers is used in manufacture of Neoprene rubber?
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Which one of the following statements is not correct?
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Chloroprene is used as a repeating unit for which of the following polymer.
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Cis-1,4-polyisoprene is called
MEDIUM
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Styrene-butadiene elastomers (SBR) are the largest-volume synthetic rubber in the world. What is the ratio of butadiene : styrene in SBR?
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
In polymer Buna-S:'S' stands for:
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Which of the following rubbers is not a polydiene?
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
The material used by dentists in root canals is
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
In Buna-S, letter S corresponds to
EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Which one of the following structures represents the neoprene rubber?
MEDIUM
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers

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
(c) Buna-N (III) chloroprene
(d) Buna-S (IV) Isoprene

 

EASY
Chemistry>Organic Chemistry>Polymers>Natural and Synthetic Rubbers
Which one of the following structures represents the neoprene polymer?