Discussion Forum



1)

Match the catalysts to the correct processes.

       Catalyst                                         Process

(A)  $TiCl_{3}$                                (i)  Wacker process

(B)   $PdCl_{2}$                              (ii)   Ziegler-Natta Polymerisation

(C)   $CuCl_{2}$                              (iii)   Contact process

(D)  $V_{2}O_{5}$                          (iV)  Deacon's  process


A) (A)- (iii), (B)-(ii), (C)-(iv), D- (i)

B) (A)- (ii), (B)-(i), (C)-(iv), D- (iii)

C) (A)- (ii), (B)-(iii), (C)-(iv), D- (i)

D) (A)- (iii), (B)-(i), (C)-(ii), D- (iv)

Answer:

Option B

Explanation:

(a)   $TiCl_{3}$   is used as Ziegler -Natta catalyst for the polymerisation of ethene.

(b)  $PdCl_{2}$   is used in the Wacker process, in which alkene changed into aldehyde via catalytic cyclic process initiated by  $PdCl_{2}$.

(c)   $CuCl_{2}$ is used in Deacon's process (for Cl2)

(d)  $V_{2}O_{5}$    is used in contact process of manufacturing sulphuric acid.

 Time Saving Technique.

                    This type of questions can also be solved through elimination technique. There is no need to know all four matches to select the correct response. Even if you know (b) matches then also you can solve the problem. e.g,  suppose you know the usage of  $V_{2}O_{5}$ in contact process (i,e,  D matches with  (iii)  and  $TiCl_{3}$ is connected to Ziegler-Natta catalyst  (i.e,  A matches with ii).  These two combinations are present only in option number (b). Likewise, for this question particularly if you know that $V_{2}O_{5}$ is used in contact process then this combination is present in option (b) only out of all the four option given. In this way, you can eliminate wrong options to get the correct response.