Dr. MGR University Question Paper

(LG 4256) FEBRUARY 2015 Sub. Code: 4256

B.PHARM. EXAMINATION

SECOND YEAR

PAPER I – PHYSICAL PHARMACEUTICS

Q.P. Code: 564256

Time: Three hours Maximum: 100 marks

I. Essay: (2 x 20 = 40)

1. a) What are colloids? Explain the stability of colloids using DLVO theory.

How are the colloids protected?

b) Define dissolution. Write about the factors affecting rate of dissolution.

2. a) What are the basic properties of a powder? Explain any one method to

determine one basic property.

b) Define complexes. Classify the complexes with suitable example. Write about

the inclusion complexes.

I. Short notes: (8 x 5 = 40)

1. Classification of flocculating agents

2. Determination of expiry date

3. Classification of viscometers

4. Stability of emulsions

5. Electric properties of interface

6. Isotonic solutions

7. Significance of protein binding

8. Types of suspensions

III. Short answers: (10 x 2 = 20)

1. Gibb’s adsorption equation

2. Spreading coefficient

3. Endocytosis

4. Ultra centrifuge

5. Bancraft rule

6. Ferrocene

7. CMC

8. Bulges and spurs

9. Thioxtrophy

10.Order of reaction

(LG 4256) FEBRUARY 2015 Sub. Code: 4256

B.PHARM. EXAMINATION

SECOND YEAR

PAPER I – PHYSICAL PHARMACEUTICS

Q.P. Code: 564256

Time: Three hours Maximum: 100 marks

I. Essay: (2 x 20 = 40)

1. a) What are colloids? Explain the stability of colloids using DLVO theory.

How are the colloids protected?

b) Define dissolution. Write about the factors affecting rate of dissolution.

2. a) What are the basic properties of a powder? Explain any one method to

determine one basic property.

b) Define complexes. Classify the complexes with suitable example. Write about

the inclusion complexes.

I. Short notes: (8 x 5 = 40)

1. Classification of flocculating agents

2. Determination of expiry date

3. Classification of viscometers

4. Stability of emulsions

5. Electric properties of interface

6. Isotonic solutions

7. Significance of protein binding

8. Types of suspensions

III. Short answers: (10 x 2 = 20)

1. Gibb’s adsorption equation

2. Spreading coefficient

3. Endocytosis

4. Ultra centrifuge

5. Bancraft rule

6. Ferrocene

7. CMC

8. Bulges and spurs

9. Thioxtrophy

10.Order of reaction

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