Which type of amino acid is lysine ?

1. b - amino acid

2. Acidic

3. Basic

4. Neutral

Mixture of glucose and water can be separated by:-

1. Distillation

2. Crystallisation

3. Sublimation

4. All of the above

Number of Chiral carbon atoms in cyclic b-D(+)-glucose is

1. 5

2. 4

3. 3

4. 2

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

How many moles of HIO₄ is required to break down the following molecule?

1. 1

2. 2

3. 3

4. 4

Nitrous acid (HNO₂) converts amino acids into hydroxy acids with retention of configuration.

Estimation of nitrogen gas evolved in the reaction is the basis of Van slyke estimation of amino acids. Which of the following amino acids cannot be analysed by Van slyke method?

Codes :

(1) only I

(2) only II

(3) I and III

(4) I, III, IV

Which of the following aldohexoses give the same osazone derivative ?

(1) I and IV

(2) I and III

(3) II and III

(4) III and IV

Which of the following is a non–reducing sugar ?

1.
2.
3.
4.

How many moles of acetic anhydride (Ac₂O) is needed to react completely with tartaric acid, ribose, and glucose respectively?

(1) 2,4, 5

(2) 2, 3, 4

(3) 4, 5, 6

(4) 4, 5, 5