Artificial silk is :

• nylon - 6

• rayon

• nylon 66

• none of these

Which of the following is common example of fibres ?

• Bakelite

• Buna - S

• Nylon - 66

• PVC

Assertion : Ebonite is highly vulcanised rubber.

Reason : Perlon is used in the manufacture of fibres.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

Which is not a polymer?

• Sucrose

• Enzyme

• Starch

• Teflon

Assertion : Teflon has high thennal stability and chemical inertness.

Reason : Teflon is a thermoplastic.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

446.

Chain transfer reagent is

• CCl₄

• CH₄

• O₂

• H₂

The monomer of teflon polymer is :

• CF₂=CF₂

• CF₂=CCl₂

• CH₂F-CH₂F

• CF₂=CFCl

Assertion : 1,3-butadiene is the monomer for natural rubber.

Reason : Natural rubber is formed through anionic addition polymerization.

• If both assertion and reason are true and reason is the correct explanation of the assertion.

• If both assertion and reason are true but reason is not the correct explanation of the assertion.

• If assertion is true, but reason is false.

• Both assertion and reason are false statements

The components of Zeigler Natta catalyst, used in the polymerisation of propylene, are:

• TiCl₃ + Al(C₂H₅)₃

• TiCl₄ + Al(C₂H₅)₃

• Ti(C₂H₅)₃ + AlCl₃

• Ti(C₂H₅)₄ + AlCl₃

Teflon is a polymer of :

• tetra fluoroethylene

• tetrabromoethylene

• tetraiodoethylene

• tetrachloroethylene