Difficulty distribution
How the classified questions are distributed by difficulty.
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Practice Hydrocarbons - Organic Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
Every graph below is calculated only from this selection.
Year-wise coverage for Hydrocarbons. Each bar uses a separate theme-derived color.
How the classified questions are distributed by difficulty.
MCQ, numerical, multiple-select and other formats found in these papers.
Top subjects by unique question coverage.
Top topics across the included previous year papers.
Top subtopics inside this exact selection.
Question coverage for the most populated papers. Every active PYP paper remains listed below.
Newest papers appear first. Sort by year, question coverage or name.
| Paper | Year / session | Questions in this view | Open |
|---|---|---|---|
| KCET 2025 | 2025 | 1 | View paper |
| KCET 2024 | 2024 | 3 | View paper |
| KCET 2022 | 2022 | 1 | View paper |
| KCET 2020 | 2020 | 1 | View paper |
| KCET 2019 | 2019 | 3 | View paper |
| KCET 2018 | 2018 | 3 | View paper |
| KCET 2017 | 2017 | 1 | View paper |
Practice every matching question in batches of 20, with every available option.
The reagent $X$ used for the following reaction is

The number of \(\pi\)-bonds and \(\sigma\)-bonds present in naphthalene are respectively
2-butyne is reduced to trans-but-2-ene using
The alkyl halides required to prepare
by Wurtz reaction are
Identify 'X' in the following reaction.

Identify, A and B in the following reaction

But-1-yne on reaction with dil. $\mathrm{H}_2 \mathrm{SO}_4$ in presence of $\mathrm{Hg}^{2+}$ ions at 333 K gives
2-methyl propane can be prepared by Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are :
In the given sequence of reactions, identify ' $P^{\prime}, Q^{\prime}, R^{\prime}$ and ' $S$ respectively.

The major product formed when $1-$ Bromo $-3-$ Chlorocyclobutane reacts with metallic sodium in dry ether is