Question

Item ‘I’
(Compound)
(A) Lysine
(B) Furfural
(C) Benzyl alcohol
(D) Styrene

Item ‘II’
(Reagent)
(P) 1-naphthol
(Q) ninhydrin
(R) $KMn{{O}_{4}}$
(S) ceric ammonium

A. (A)-(Q), (B)-(P), (C)-(S), (D)-(R)
B. (A)-(Q), (B)-(R), (C)-(S), (D)-(P)
C. (A)-(Q), (B)-(P), (C)-(R), (D)-(S)
D. (A)-(S), (B)-(P), (C)-(Q), (D)-(R)

Answer 1

Lysine is an α-amino acid used in biosynthesis of proteins. Furfural is an organic compound having molecular formula ${{C}_{4}}{{H}_{3}}OCHO$. Benzyl alcohol is an aromatic alcohol with the formula ${{C}_{6}}{{H}_{5}}C{{H}_{2}}OH$. Styrene is also an organic compound.

Complete step by step answer:
Lysin contains an $\alpha$-amino group, an $\alpha$-carboxylic acid group and a side chain lysyl. It is basic in nature, contains charge and in the category of aliphatic amino acids. Ninhydrin is most commonly reagent used to detect fingerprints because the terminal amines of lysine residues in peptides and proteins slipped off in fingerprints react with ninhydrin. It is a white solid which is soluble in ethanol and acetone at room temperature.
Furfural is generally defined as a colorless liquid although commercial samples of it are often found to be brown in colour. It contains furan rings and are mentioned under the category of heterocyclic compound in which an aldehyde group is attached to the 2-position of furan. It is a product of the dehydration of sugars which occur in a variety of agricultural byproducts including corncobs, oat, wheat bran and sawdust. Furfural is related to 1-naphthol.
Benzyl alcohol is a colorless liquid having a sharp taste and slight odor. It is used in the manufacturing of other benzyl compounds in industries and in the preparation of perfumes and flavoring agents. Benzyl alcohol is related with ceric ammonium; it converts benzyl alcohol into benzaldehyde.
Styrene is the derivative of benzene which is a colorless oily liquid, this compound can evaporate easily and have a sweet smell. Styrene is the precursor to polystyrene and several copolymers. $KMn{{O}_{4}}$ reacts with styrene to form aldehyde.
So, the correct answer is “Option A”.

Note: Lysine is very important for humans as it is the kind of protein which we get from food. Furfural is an important renewable non-petroleum based chemical feedstock which can be converted into a number of solvents, polymers, fuels and other useful chemicals. Benzyl alcohol is mainly used in drugs and styrene is used in the manufacturing of rubber, latex and polystyrene resins etc.