Difficulty distribution
How the classified questions are distributed by difficulty.
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Practice Biomolecules - 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 Biomolecules. 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 |
|---|---|---|---|
| RE-NEET 2026 | 2026 | 3 | View paper |
Practice every matching question in batches of 20, with every available option.
The amino acid that gives a red-blood colour on treating its sodium fusion extract with sodium nitroprusside is
$$\text { Match the vitamins in List I with their sources in List II }$$
$$\begin{array}{|l|l|l|l|} \hline & \text { List I } & & \text { List II } \\ \hline \text { A. } & \text { vitamin A } & \text { I. } & \text { meat } \\ \hline \text { B. } & \text { vitamin B }{ }_{12} & \text { II. } & \text { sunflower oil } \\ \hline \text { C. } & \text { vitamin E } & \text { III. } & \text { green leafy vegetables } \\ \hline \text { D } & \text { vitamin K } & \text { IV. } & \text { carrots } \\ \hline \end{array}$$
Choose the correct answer from the options given below.
The correct statement about peptides and proteins is