JEE Chemistry 2025 Question with Solution

Given: A sequence of organic transformations connects compounds A, B, C, and D.

Find: The correct identities of A, B, C, and D.

From the solution, B is identified as acetic acid, an edible cooking component and food preservative. The solution further states that A is methanol.

Next, the solution concludes that B is converted to C = ethanol, which is used as a petrol additive to reduce emission.

Finally, the solution states that ethanol on reaction with oleum at $140^\circ \text{C}$ gives D = diethyl ether, an inhalable anesthetic.

Therefore, the sequence is:

• A = Methanol
• B = Acetic acid
• C = Ethanol
• D = Diethyl ether

Hence, the correct option is C.

Given: A toxic compound “A” reacts to form an edible preservative “B”, then a petrol additive “C”, and finally an inhalable anesthetic “D”.

Find: The correct ordered set of compounds.

1. The solution identifies the edible cooking component and preservative B as acetic acid.
2. It then assigns A as methanol.
3. The product C obtained from B is stated in the solution to be ethanol, which is used as an additive to petrol.
4. On treatment of C with oleum at $140^\circ \text{C}$, the solution identifies D as diethyl ether, an inhalable anesthetic.

So the required order is: Methanol; acetic acid; ethanol; diethyl ether.

Therefore, the correct option is C.