Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Biomolecules

Question:

Match List I with List II

List I List II
A. Terylene I. Glycosidic linkage
B. Nylon II. Ester linkage
C. Cellulose III. Phosphodiester linkage
D. RNA IV. Amide linkage

Choose the correct answer from the options given below:

Options:

A-II, B-IV, C-I, D-III

A-III, B-II, C-IV, D-I

A-I, B-II, C-III, D-IV

A-IV, B-II, C-III, D-I

Correct Answer:

A-II, B-IV, C-I, D-III

Explanation:

The correct answer is option 1. A-II, B-IV, C-I, D-III.

Let us look at the different molecules and their bonding:

A. Terylene: Terylene is a type of polyester, which is a polymer composed of repeating units linked together by ester linkages. These ester linkages \((-COO-)\) are formed between the carboxyl (-COOH) groups of one monomer and the hydroxyl \((-OH)\) groups of another monomer during the polymerization process.

B. Nylon: Nylon is a synthetic polymer known as a polyamide, which is formed by the condensation polymerization of monomers containing both carboxyl \((-COOH)\) and amino \((-NH_2)\) groups. The amide linkages \((-CONH-)\) are formed between the carboxyl group of one monomer and the amino group of another monomer

C. Cellulose: Cellulose is a polysaccharide found in the cell walls of plants and is composed of repeating glucose monomers linked together by glycosidic linkages \((-C-O-C-)\). These linkages are formed between the anomeric carbon atom of one glucose molecule and the hydroxyl group of another glucose molecule during polymerization.

D. RNA: RNA (ribonucleic acid) is a nucleic acid composed of nucleotide monomers. The backbone of RNA is formed by phosphodiester linkages \((-PO_2-)\) between the 3' carbon of one nucleotide and the 5' carbon of the next nucleotide in the chain.

Therefore, the correct matches are:

A-II (Terylene contains ester linkages),

B-IV (Nylon contains amide linkages),

C-I (Cellulose contains glycosidic linkages),

D-III (RNA contains phosphodiester linkages).

So, option 1. A-II, B-IV, C-I, D-III is correct.