Most Missed Q's Review

Question 1

If the pH of a parenteral preparation differs significantly (by more than 2 pH units) from the physiological pH, it is better to

Answer 1

Use dilute buffers than concentrated buffers for controlling pH

Question 2

T/F: Buffers have to be used in all parenteral preps to ensure they have their intended pH value

Answer 2

False

Question 3

T/F: The pH of all parenteral preps must always match physiological pH

Answer 3

False

Question 4

T/F:
1. W/O emulsion is used to mask the taste of mineral oil
2. O/W emulsion is used for making water-washable lotions
3. O/W emulsion is used to enhance absorption of vitamin A
4. Parenteral nutrition can be administered as an O/W emulsion
5. In the O/W emulsion, water is the dispersed phase, and oil is the continuous phase

Answer 4

1. False
2. True
3. True
4. True
5. False

Question 5

Which compounds are used for pharmaceutical perservatives

Answer 5

Benzyl alcohol
Benzoic acid
Benzalkonium chloride
Butyl paraben
Propyl paraben

Question 6

What preservative is most affected by solution pH in the preservative activity

Answer 6

Benzoic acid

Question 7

Certain iso-osmotic pH neutral infusates cause

Answer 7

Phlebitis

Question 8

What is the mechanism of Magnesium aluminum silicate