1.

In which of the following reactions heterogeneous catalysis is involved?(i) 2SO_(2)(g)+O_(2)(g) overset(NO(g))(to) 2SO_(3)(g) (ii) 2SO_(2)(g) overset(Pt(s))(to) 2SO_(3)(g) (iii) N_(2)(g)+3H_(2)(g) overset(Fe(s))(to) 2NH_(3)(g) (iv) CH_(3)COOCH_(3)(l)+H_(2)O(l) overset(HCl(l))(to)CH_(3)COOH(aq)+CH_(3)OH(aq)

Answer»

(II), (III)
(II), (III), (IV)
(I), (II), (III)
(IV)

ANSWER :A


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