AIIMS 2019 Chemistry Properties and Tests Multiple Correct Question

Tyrosine does contain a phenol group and can be tested with neutral FeCl₃, making the first statement true. However, serine, which contains a hydroxyl (alcohol) group, does not specifically react with ceric ammonium nitrate, rendering the second statement false. Tryptophan is indeed an essential amino acid, confirming the third statement as true. Proline, containing a secondary amino group, does not yield a positive result in the carbylamine test, making the fourth statement false. Thus, the combination of true, false, true, and false aligns with option C. Other options incorrectly classify the nature of these compounds or their reactivity.