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Question

Which of the following is first order ?
i) Decomposition of NH4NO3 in aqueous solution.
ii) Inversion of cane sugar in the presence of an acid
iii) Base hydrolysis of ethyl acetate.
iv) All radioactive decays.
The correct combination is:

A
i, ii, iv
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B
All are correct
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C
ii, iv
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D
ii, iii, iv
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Solution

The correct option is D i, ii, iv
Base hydrolysis of ethyl acetate is a second order reaction.
The other reactions are first order reactions.

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