List of practice Questions

Identify P, Q and R in the following reaction sequence:
\[ P \xrightarrow{\text{NH}_3} \text{CH}_3\text{COO}^- \text{NH}_4^+ \xrightarrow{\Delta} Q \xrightarrow{\text{PCl}_5} R \]

Give any two differences between order and molecularity of a reaction.

Liquids ‘X’ and ‘Y’ form an ideal solution. The vapour pressure of pure ‘X’ and pure ‘Y’ are 120 mm Hg and 160 mm Hg respectively. Calculate the vapour pressure of the solution containing equal moles of ‘X’ and ‘Y’.

Give a method to separate o-nitrophenol and p-nitrophenol. Explain the principle involved.

For the reaction A + B $\to$ Products, the following initial rates were obtained at various initial concentrations of reactants:

Reaction Rate Data

Sl. No.	[A] (mol L⁻¹)	[B] (mol L⁻¹)	Initial rate (mol L⁻¹ s⁻¹)
1	0.1	0.1	0.05
2	0.2	0.1	0.10
3	0.1	0.2	0.05

Write the chemical equation for Williamson’s synthesis.

Write an equation for Clemensen reduction

Draw the possible isomers of:
\[ [ \text{Co}(\text{en})_2\text{Cl}_2 ]^+ \]

Which of the following (A) or (B) will be the major product in the reaction given below? Give a suitable reason for your answer.
\[ \text{CH}_3\text{CH}_2\text{CH}_2\text{Br} + \text{KOH} \rightarrow \]

Based on Valence Bond Theory, explain the geometry and magnetic character of [NiCl$_4$]$^{2-$. [Atomic number: Ni = 28]}

Give a simple chemical test to distinguish between 3-pentanol and 2-pentanol.

When pyrolusite ore is fused with KOH, in presence of air, a dark green coloured product ‘A’ is obtained which changes to purple coloured compound ‘B’ in acidic medium.
(II) Write the formulae of ‘A’ and ‘B’.

Define rate constant.

Give Reasons:
(I) $ \text{Ce}^{4+} $ in aqueous solution is a good oxidising agent.
(II) The actinoid contraction is greater from element to element than lanthanoid contraction.
(III) $ E^\circ_{\text{M}^{2+}/\text{M}} $ value is more negative than expected, whereas $ E^\circ_{\text{Cu}^{2+}/\text{Cu}} $ is positive.

Write the mechanism of dehydration of ethyl alcohol with conc. H$_2$SO$_4$ at 413 K.

Identify the reaction order which has a rate constant of 4.5 × 10−5 L mol−1 s−1.