Arrange the following redox couples in the increasing order of their reducing strength:
Cu$^{2+}$/Cu$^{+}$ $E^\circ = -0.34$ V
Ag$^+$/Ag $E^\circ = -0.8$ V
Ca$^{2+}$/Ca $E^\circ = +2.87$ V
Cr$^{3+}$/Cr$^{2+}$ $E^\circ = +0.74$ V

Match the Vitamins given in Column I with the diseases caused by their deficiency as given in Column II.

Choose the incorrect statement from the following:

The Activation energy for the reaction A $\rightarrow$ B + C, at a temperature $T_K$ was 0.04606 RT J/mol. What is the ratio of Arrhenius factor to the Rate constant for this reaction?

Based on Crystal Field theory, match the Complex ions listed in Column I with the electronic configuration in the d orbitals of the central metal ion listed in Column II.

5.0 moles of an Ideal gas at 3.0 atm pressure and 27$^\circ$C is compressed isothermally to half its volume by application of an external pressure of 3.5 atm. What is the amount of work done (in joules) on the gas? Given: 1 L atm = 101.3 J, R = 0.082 L atm K$^{-1}$ mol$^{-1}$

Identify the products C, D, and F formed in the following sets of reactions.

In the presence of a catalyst at a given temperature of 27$^\circ$C, the Activation energy of a specific reaction is reduced by 100 J/mol. What is the ratio between the rate constants for the catalysed ($k_2$) and uncatalysed ($k_1$) reactions?

The following data was recorded for the decomposition of XY compound at 750K

What is the order of reaction with respect to decomposition of XY?