JEE Main 2026 Question Paper

Identify A in the following reaction.

A hydrocarbon ' P ' on reaction with HCl gives an optically active compound ' Q ' which on reaction with one mole of ammonia gives compound ' R ' . ' R ' on diazotization followed by hydrolysis gives ' S '. Identify and S .

Given below are two statements:Statement I: The number of pairs among [ ], and , which contain oxides that are both amphoteric is 2 .Statement II : is an electron deficient molecule can act as a lewis acid, forms adduct with and has a trigonal planar geometry.In the light of the above statement, choose the correct answer from the option given below.

80 mL of a hydrocarbon on mixing with 264 mL of oxygen in a closed U-tube undergoes complete combustion. The residual gases after cooling to 273 K occupy 224 mL. When the system is treated with KOH solution, the volume decreases to 64 mL. The formula of the hydrocarbon is :

From the following, the least stable structure is :