Previous year questions with solutions · 2024 – 2026
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2026 | 13 | 19 | 0.68 | 2.74% ▲ 62.5% vs last year |
| 2025 | 8 | 19 | 0.42 | 1.68% ▼ 66.3% vs last year |
| 2024 | 30 | 21 | 1.4 | 4.99% |
4.7 g of phenol is heated with Zn to give product X. If this reaction goes to 60% completion then the number of moles of compound X formed will be 10-2. (Nearest Integer) (Given molar mass in g mol-1 : H:1, C:12, O:16)
One mole of phenol is treated with dilute HNO3 at 298 K to give a mixture of products. The mixture is separated by steam distillation. The steam volatile compound (X) is separated. The increase in percentage of oxygen in (X) with respect to phenol is 10-1% (Given molar mass in g mol-1 H : 1, C : 12, N : 14, O : 16)
[figure] The ratio of number of oxygen atoms to bromine atoms in the product Q is 10-1.
Consider the given chemical reaction sequence : [figure] Total sum of oxygen atoms in Product A and Product B is .