The reaction of concentrated sulphuric acid with carbohydrates (C₁₂H₂₂O₁₁) is an example of:
1. Dehydration
2. Oxidation
3. Reduction
4. Sulphonation

Deficiency of which vitamin causes osteomalacia ?

Fructose reduces Tollen's reagent due to:

The correct statements regarding "Denaturation" are:

1. (a), (b) and (c)
2. (b) and (c)
3. (a) and (c)
4. (a) and (b)

$\alpha$-D-glucose and β-D-glucose are:

1. Epimers

2. Anomers

3. Functional isomers

4. Chain isomers

The structure that represents the peptide chain is:

1.
2.
3.
4.

D-Glucose  \(\xrightarrow[]{\textbf{?}}\) Saccharic acid

The oxidizing reagent used for this conversion is:
1. HI
2. Bromine water
3. HNO₃ 
4. H₂SO₄

Given below are two statements: 

Examples of globular proteins are:

Choose the correct option : 
1. (a) and (b)
2. (b) and (c)
3. (c) and (d)
4. (a) and (c)

Out of the three given structures, the correct statement regarding bonds present between C₁  &  C₄  and C₁  &  C₆  is

(i)
(ii)		(iii)