List I (Reagents Used) | List II (Compound with Functional group detected) | ||
| A | Alkaline solution of copper sulphate and sodium citrate | I | ![]() |
| B | Neutral FeCl3 solution | II | ![]() |
| C | Alkaline chloroform solution | III | ![]() |
| D | Potassium iodide and sodium hypochlorite | IV | ![]() |
Choose the correct answer from the options given below :
A: Alkaline solution of copper sulphate and sodium citrate detects aldehydes. The aldehyde reacts to form a reddish-brown precipitate of Cu$_2$O.
B: Neutral FeCl$_3$ solution is used for detecting phenolic groups. Phenols give a characteristic color (violet or blue).
C: Alkaline chloroform solution (Haloform test) detects the presence of a methyl ketone or a methyl group adjacent to a hydroxyl group.
D: Potassium iodide and sodium hypochlorite (Iodoform test) confirms alcohol groups (-CH$_3$OH). \end{itemize}
Match List-I with List-II:
Method used for separation of mixture of products (B and C) obtained in the following reaction is: 
In the following \(p\text{–}V\) diagram, the equation of state along the curved path is given by \[ (V-2)^2 = 4ap, \] where \(a\) is a constant. The total work done in the closed path is: 
Let \( ABC \) be a triangle. Consider four points \( p_1, p_2, p_3, p_4 \) on the side \( AB \), five points \( p_5, p_6, p_7, p_8, p_9 \) on the side \( BC \), and four points \( p_{10}, p_{11}, p_{12}, p_{13} \) on the side \( AC \). None of these points is a vertex of the triangle \( ABC \). Then the total number of pentagons that can be formed by taking all the vertices from the points \( p_1, p_2, \ldots, p_{13} \) is ___________.