question_answer 97)

    Match the items of Columns I and II and mark the correct option.

	Column 1	Column 11
A.	Its partial hydrolysis does not change oxidation state of central atom.	1. He
B.	It is used in modern diving apparatus.	2.
C.	It is used to provide inert atmosphere for filling electrical bulbs.	3.
D.	Its central atom is in sp^d2 hybridisation.	4. Ar

  Codes      A    B   C   D                        A   B   C   D (a) 1   4   2   3                    (b) 1   2   3   4 (c) 2   1   4   3                    (d) 1   3   2   4

Answer:

                    A.®(2)    B.®(1)    C.®(4)    D.®(3)  Partial hydrolysis of  does not change oxidation state of central atom. (B) He is used in modern diving apparatus.                                           (C) Ar is used to provide inert atmosphere for filling electrical bulbs (D) Central atom (Xe) of  is in hybridisation.