Given below are two statements: 

Assertion (A):	β -Glycosidic linkage is present in maltose.
Reason (R):	Maltose is composed of two glucose units in which C- 1 of one glucose unit is linked to C- 4 of another glucose unit.

1.	Assertion and reason both are correct statements and reason explain the assertion.
2.	Assertion and reason both are correct statements but reason does not explain assertion.
3.	Assertion is the correct statement and reason is the wrong statement.
4.	Assertion is the wrong statement and reason is the correct statement.

Carbohydrates are useful for plants-

1. To build cell membrane.

2. To support structure.

3. To serve as a storage molecule.

4. To help in the transport mechanism.

Consider the following compounds: 

Ribose, 2-deoxyribose, maltose, galactose, fructose and lactose

The number of disaccharide carbohydrates is/are:

The main component present in starch and glycogen is:

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

The oxidizing reagent used for this conversion is -

The open structure of glucose cannot be established by:

1. HCN

2. Schiff’s test

3. Hydroxylamine test

4. Reaction with HI

The incorrect statement about nucleic acid is:

The correct statement about RNA is :

The essential amino acid is/are-
1. Valine
2. Alanine
3. Serine
4. All of the above

The enzyme used for the above conversion is:
\(C_{12}H_{22}O_{11}\ \xrightarrow[H_2O]{?}\ \text{2 mole of glucose}\)