Match the following
List – I (Source) List – II (Carboxylic Acid)
| Source | Carboxylic Acid |
| A. Vinegar | I. HCOOH |
| B. Butter | II. CH3CH2COOH |
| C. Ants | III. CH3COOH |
| IV. CH3CH2CH2COOH |
Consider the following two reactions A and B: 
The numerical value of [molar mass of $x$ + molar mass of $y$] is ___.
Which one of the following graphs accurately represents the plot of partial pressure of CS₂ vs its mole fraction in a mixture of acetone and CS₂ at constant temperature?

Consider the following reaction sequence: 
Given: Compound (x) has percentage composition \(76.6%\ \text{C}\), \(6.38%\ \text{H}\) and vapour density \(=47\). Compound (y) develops a characteristic colour with neutral \(\mathrm{FeCl_3}\) solution. Identify the {INCORRECT statement.}