Biomolecules - Organic Chemistry - Chemistry Previous Year Questions

Two statements are given below :

I. Milk sugar is disaccharide of $\alpha$-D-galactose and $\beta$-D-glucose

II. Sucrose is disaccharide of $\alpha$-D-glucose and $\beta$-D-fructose

What is the IUPAC name of the product $Y$ in the given reaction sequence?

A carbohydrate $(A)$, when treated with dilute HCl in alcoholic solution gives two isomers $(B)$ and $(C)$. $B$ on reaction with bromine water gives a monocarboxylic acid ' $Z$ ' and ' $C$ ' is a ketohexose. What is $A$ ?

Which of the following hormones is an example of polypeptide?

Maltose on hydrolysis gives two monosaccharide units. The incorrect statement about the monosaccharides formed is

On prolonged heating with HI , glucose gives a compound ' $C$ ' which can be obtained by Wurtz reaction using sodium metal and compound ' $D$ ' . Identify ' $D$ '

Amino acid ' $X$ ' contains phenolic hydroxy group and amino acid ' $Y$ ' contains amide group. ' $X$ ' and ' $Y$ ' respectively are

The general structure of alpha amino acid can be represented as

Which amino acid is not correctly matched with $R$ given?