325178
Which of the following statements is not true?
1 Natural rubber is a 1, 4-polymer of isoprene.
2 In vulcanisation, the formation of sulphur bridges between different chains that make rubber harder and stronger.
3 Natural rubber has the trans-configuration at every double bond.
4 Buna-S is a copolymer of butadiene and styrene.
Explanation:
Natural rubber is cis-configuration of 1,4- polyisoprene or but synthetic rubber obtained by free radical polymerisation of isoprence has all \(trans\)-configuration
CHXII15:POLYMERS
325179
Which of the following polymer is a good substitute for natural rubber?
1 Buna - N
2 Buna - S
3 Chloroprene
4 Neoprene
Explanation:
Buna - s is a good substitute for natural rubber
CHXII15:POLYMERS
325180
Which is incorrect?
1 Isoprene is the monomer of natural rubber.
2 Neoprene is monomeric unit of Isoprene.
3 Vulcanisation of rubber involves S-S cross linking in natural rubber.
4 Neoprene rubber is resistant to aerial oxidation.
325178
Which of the following statements is not true?
1 Natural rubber is a 1, 4-polymer of isoprene.
2 In vulcanisation, the formation of sulphur bridges between different chains that make rubber harder and stronger.
3 Natural rubber has the trans-configuration at every double bond.
4 Buna-S is a copolymer of butadiene and styrene.
Explanation:
Natural rubber is cis-configuration of 1,4- polyisoprene or but synthetic rubber obtained by free radical polymerisation of isoprence has all \(trans\)-configuration
CHXII15:POLYMERS
325179
Which of the following polymer is a good substitute for natural rubber?
1 Buna - N
2 Buna - S
3 Chloroprene
4 Neoprene
Explanation:
Buna - s is a good substitute for natural rubber
CHXII15:POLYMERS
325180
Which is incorrect?
1 Isoprene is the monomer of natural rubber.
2 Neoprene is monomeric unit of Isoprene.
3 Vulcanisation of rubber involves S-S cross linking in natural rubber.
4 Neoprene rubber is resistant to aerial oxidation.
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CHXII15:POLYMERS
325178
Which of the following statements is not true?
1 Natural rubber is a 1, 4-polymer of isoprene.
2 In vulcanisation, the formation of sulphur bridges between different chains that make rubber harder and stronger.
3 Natural rubber has the trans-configuration at every double bond.
4 Buna-S is a copolymer of butadiene and styrene.
Explanation:
Natural rubber is cis-configuration of 1,4- polyisoprene or but synthetic rubber obtained by free radical polymerisation of isoprence has all \(trans\)-configuration
CHXII15:POLYMERS
325179
Which of the following polymer is a good substitute for natural rubber?
1 Buna - N
2 Buna - S
3 Chloroprene
4 Neoprene
Explanation:
Buna - s is a good substitute for natural rubber
CHXII15:POLYMERS
325180
Which is incorrect?
1 Isoprene is the monomer of natural rubber.
2 Neoprene is monomeric unit of Isoprene.
3 Vulcanisation of rubber involves S-S cross linking in natural rubber.
4 Neoprene rubber is resistant to aerial oxidation.
325178
Which of the following statements is not true?
1 Natural rubber is a 1, 4-polymer of isoprene.
2 In vulcanisation, the formation of sulphur bridges between different chains that make rubber harder and stronger.
3 Natural rubber has the trans-configuration at every double bond.
4 Buna-S is a copolymer of butadiene and styrene.
Explanation:
Natural rubber is cis-configuration of 1,4- polyisoprene or but synthetic rubber obtained by free radical polymerisation of isoprence has all \(trans\)-configuration
CHXII15:POLYMERS
325179
Which of the following polymer is a good substitute for natural rubber?
1 Buna - N
2 Buna - S
3 Chloroprene
4 Neoprene
Explanation:
Buna - s is a good substitute for natural rubber
CHXII15:POLYMERS
325180
Which is incorrect?
1 Isoprene is the monomer of natural rubber.
2 Neoprene is monomeric unit of Isoprene.
3 Vulcanisation of rubber involves S-S cross linking in natural rubber.
4 Neoprene rubber is resistant to aerial oxidation.
