Question

Chloroprene is used in making
A . Synthetic rubber
B . Plastic
C . Petrol
D . All of these

Answer 1

Hint: In this question we have to check the formation of synthetic rubber, plastic and petrol to know which one of them is made from chloroprene. Chloroprene is derived from a buta-1,3-diene hydride. The chemical formula of chloroprene is C₄H₅Cl.

Complete Step by Step Answer:
Chloroprene is the monomer of neoprene, a synthetic rubber formed by the free radical polymerisation of chloroprene.
$nCH_2-CCl-CH=CH_2\xrightarrow[]{polymerisation} -\left [ CH_2-CCl=CH-CH_2 \right ]$
The correct answer is A.

Additional Information: Chloroprene is a chlorinated hydrocarbon that is colourless, flammable, carcinogenic, and has a distinct, ethereal fragrance. Chloroprene serves as a chemical bridge in the production of neoprene rubber. This drug harms the skin, lungs, CNS, kidneys, liver, and immune system when it is exposed to them. Chloroprene is mutagenic and carcinogenic in animals, and it is perhaps carcinogenic to humans. The flashpoint of stabilised chloroprene is -4 °F, and it appears as a clear, colourless liquid. Upon heating or contamination, exothermic polymerization is possible. When polymerization occurs inside of a container, the container may violently rupture. It is not as dense as water. Heavier than air vapours. a process for making rubber for neoprene.Chlorination, isomerization of a portion of the product stream, and dehydrochlorination of 3,4-dichlorobut-1-ene are the three processes that make chloroprene from 1,3-butadiene. To make a mixture of 3,4-dichlorobut-1-ene and 1,4-dichlorobut-2-ene, chlorine is added to 1,3-butadiene. To make a mixture of 3,4-dichlorobut-1-ene and 1,4-dichlorobut-2-ene, chlorine is added to 1,3-butadiene. The 3,4 isomer is then treated with base to cause dehydrochlorination to 2-chlorobuta-1,3-diene after the 1,4-dichloro isomer isomerization is complete. This dehydrohalogenation forms a double bond between the carbons 3 and 4 by removing the chlorine atom from the fourth position and the hydrogen atom from the third position. The main contaminant in chloroprene created in this fashion is 1-chlorobuta-1,3-diene, which is typically removed by distillation.

Note: Natural rubber is a polymer of isoprene, a conjugated diene. Chloroprene, a synthetic conjugated diene, is polymerized to create synthetic rubbers known as neoprenes. Neoprene is used in many commercial products, from industrial hoses to wetsuits for scuba diving and surfing.