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Q.

Which of the following is an instantaneous reaction?

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a

HCl+NaOH→NaCl+H2O

b

2H2+O2→Pt2H2O

c

2NO+O2→2NO2

d

H2+Cl2→2HCl

answer is A.

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Detailed Solution

Ionic reactions are instantaneous reactions, they do not involve bond rearrangements;

Neutralization reactions are ionic reactions;

Options 2,3,4 are molecular reactions;

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