a-D-(+)-glucose and b-D-(+)-glucose are

The couplings between base units of DNA is through : 

RNA and DNA are chiral molecules, their chirality is due to

1. L-sugar component

2. chiral bases

3. chiral phosphate ester units

4. D-sugar-component

Glucose molecule reacts with 'X' number of molecules of phenylhydrazine to yield

osazone. The value of 'X' is

1. four

2. one

3. two

4. three

The human body does not produce

1. DNA

2. vitamins

3. hormones

4. enzymes

Among the following  non-reducing sugar is : 

(1) Glucose

(2) Fructose

(3) Sucrose

(4) Galactose

When glucose is reacted with phenyl hydrazine then osazone is formed. In this reaction how many phenyl hydrazine molecules are used ?

1.  1

2.  2

3.  3

4.  4

Sucrose on treatment with conc. HCl produces:-

(1) Glucose

(2) Fructose

(3) Glucose + Fructose

(4) Maltose

The above process in which a and b form remain in equilibrium with acyclic form and a change in optical rotation is observed which is called as–

(1) Mutarotation

(2) Epimerisation

(3) Condensation

(4) Inversion

What will be product when glycine, is heated–

(1)
(2)
(3)
(4)