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.

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.

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?

Choose the incorrect statement from the following:

200 ml of an aqueous solution contains 3.6 g of Glucose and 1.2 g of Urea maintained at a temperature equal to 27$^{\circ}$C. What is the Osmotic pressure of the solution in atmosphere units?
Given Data R = 0.082 L atm K$^{-1}$ mol$^{-1}$
Molecular Formula: Glucose = C$_6$H$_{12}$O$_6$, Urea = NH$_2$CONH$_2$

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

Identify the final product [D] formed when Benzyl alcohol undergoes the following series of reactions: $ C_6H_5CH_2OH + SOC_2 \rightarrow [A] \quad + \quad KCN \rightarrow [B] \quad + \quad H_2O^+ (\text{partial hydrolysis}) \rightarrow [C] \quad + \quad [D] $

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?

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?

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$^{-1}$

Given below are 4 reactions. Two of these reactions will give product which is an equimolar mixture of the d and l forms. Identify these 2 reactions. Reactions $ \text{[A]} \quad \text{2-Methylpropene} + \text{HBr} \rightarrow \text{--------} $ $ \text{[B]} \quad \text{But-1-ene} + \text{HBr} \rightarrow \text{--------} $ $ \text{[C]} \quad \text{3-Methylbut-1-ene} + \text{HI} \rightarrow \text{--------} $ $ \text{[D]} \quad \text{3-Phenylpropene} + \text{HBr (Peroxide)} \rightarrow \text{--------} $

Which one of the following is the correct order of reagents to be used to convert [A] to [X]?

The Lanthanoid ion which would form coloured compounds is ------------.
Atomic numbers: Yb = 70, Lu = 71, Pr = 59, La = 57