Kinetics of Chemical Reactions

For a certain reaction $\mathrm{X}$, rate $= 0.7{\mathrm{Z}}_{\mathrm{AB}}\mathrm{e}{ }^{-\mathrm{E}{ }_{\mathrm{A}} /\mathrm{RT}}$ .

It is seen that for another reaction, $\mathrm{Y}$, rate = ${\mathrm{Z}}_{\mathrm{AB}}\mathrm{e} -\mathrm{E}{{ }_{\mathrm{A} }}^{/\mathrm{RT}}$ .

Based on the above, what can be said about reactions X and Y?

Which of the following is an example of slow reaction?

Which of the following is a moderate reaction?

Which branch of physical chemistry tell us about the rate of a particular reaction.

Cotyledons are also called-

Which one of the following reaction energy diagrams best represents a reaction in the forward direction; that is spontaneous/exothermic and complete in two consecutive steps in which the second step is little more difficult than the first step ?

The reaction cis - $\text{X}\underset{{\text{k}}_{\text{b}}}{\overset{{\text{k}}_{\text{f}}}{\rightleftharpoons }}\text{ trans -X}$ is first order in both directions. At 25^oC, the equilibrium constant is 0.10 and the rate constant k_f = 3 x 10^-4 s^-1. In an experiment starting with the pure cis - form, how long would it take for half of the equilibrium amount of the trans - isomer to be formed ?