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# Engineering

The correct match between Item -I and Item -II is :

  Item - I   Item-II
(a) Highest density (I) Peroxide catalyst
(b) Polyacrylonitrile (II) Condensation at high temperature & pressure
(c) Novolac (III) Ziegler-Natta Catalyst
(d) Nylon 6 (IV) Acid or base catalyst

 

 

 

 

 

  • Option 1)

     (a)\rightarrow (IV),(b)\rightarrow (II),(c)\rightarrow (I),(d)\rightarrow (III)

  • Option 2)

    (a)\rightarrow (II),(b)\rightarrow (IV),(c)\rightarrow (I),(d)\rightarrow (III)

  • Option 3)

    (a)\rightarrow (III),(b)\rightarrow (I),(c)\rightarrow (II),(d)\rightarrow (IV)

  • Option 4)

      (a)\rightarrow (III),(b)\rightarrow (I),(c)\rightarrow (IV),(d)\rightarrow (II)

Answers (1)
A Aadil

(a) High-density polyethene \rightarrow (III)Ziegler-Natta catalyst

         (H.D.P)

H.D.P is obtained by using Zigler-Natta Catalyst

(b) Polyacrylonitrile \rightarrow (I)Peroxide catalyst

  Polyacrylonitrile is obtained by using the peroxide catalyst 

(c) Novolac \rightarrow(IV) Acid or base catalyst 

   It is obtained by acid /base   Catalyst polymerisation of formaldehyde & phenol.

(d) Nylon 6 \rightarrow Condensation at a high temp. & pressure.

 At high T &P, it is condensation polymer of caprolactam


Option 1)

 (a)\rightarrow (IV),(b)\rightarrow (II),(c)\rightarrow (I),(d)\rightarrow (III)

Option 2)

(a)\rightarrow (II),(b)\rightarrow (IV),(c)\rightarrow (I),(d)\rightarrow (III)

Option 3)

(a)\rightarrow (III),(b)\rightarrow (I),(c)\rightarrow (II),(d)\rightarrow (IV)

Option 4)

  (a)\rightarrow (III),(b)\rightarrow (I),(c)\rightarrow (IV),(d)\rightarrow (II)

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