For a certain quantity of reactants, if the volume of the reaction vessel is reduced by a factor of $3,$ the rate of the reaction increases by a factor of $.....$. (Round off to the Nearest Integer).
As the reaction is elementary, the rate of reaction is $r = K \cdot[ A ]^{2}\left[ B _{2}\right]$
on reducing the volume by a factor of $3,$ the concentrations of $A$ and $B _{2}$ will become $3$ times and hence, the rate becomes $3^{2} \times 3=27$ times of initial rate.
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$(\log \,4 = 0.60,\, \log \,5 = 0.69)$
$(A)\, CH_3CO_2H$ $(B)\, MeOCH_2CO_2H$
$(C)\,CF_2CO_2H$ $(D)\,$ $Image$