wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

CEUTICS 3 EXAM 2 DRUG STABILITY MIRINOSHKY

Total questions: 52

Worksheet time: 4hrs 4mins

Name
Class
Date
1.

Which of the following characteristics will ensure the integrity and reliability of the drug? Select all that apply

a)

Identity

b)

Strength

c)

Surface tension

d)

Compressibility

2.

 

Which of the following characteristics mainly focus on safety of the product?

a)

Identity

b)

Strength

c)

Purity

d)

Compressibility

3.

Is defined as the time lapse during which the drug product retains, within specified limits, the same properties and characteristics that it possessed at the time of manufacture (t=0)

a)

Tortuosity

b)

Stability

c)

Compressibility

d)

Porosity

4.

Which of the following excipients that may be critical in terms of drug product stability? Select all that apply

a)

Ammonia

b)

Preservatives (antioxidants)

c)

Buffers

d)

Bulking agents

5.

Which of the following maintain the pH at the desire level that will ensure chemical and physical stability of an active ingredient within a dosage form?

a)

Antioxidants

b)

Preservatives

c)

Buffers

d)

Bulking agents

6.

Which of the following show dependence of the buffering capacity on the temperature, it may alter the buffer capacity and therefore impact the stability (Hygroscopicity)?

a)

Preservatives

b)

Bulking agents

c)

Buffer

7.

Which of the following are causes of Instability according to USP-NF? Select all that apply

a)

Physical

b)

Chemical

c)

Microbiological

d)

Therapeutic

e)

Toxicological

8.

Which of the following are the causes of physical instability? Select all that apply

a)

Polymorphic/solid-phase transformations,

Complexation

b)

Vaporization

c)

Adsorption

d)

Eutectic formation

e)

Hygroscopicity

9.

Which of the following are the causes of chemical instability? Select all that apply

a)

Hydrolysis

b)

Oxidation

c)

Polymerization

d)

Decarboxylation

e)

Deamination

10.

Which drugs classes are affected in the process in which chemicals interact with water molecules yielding reaction products? Select all that apply

a)

esters

b)

lactones

c)

lactams

d)

amines

11.

Hydrolysis is catalyzed by acids and bases => pH effect

a)

True

b)

False

12.

Which of the following statements are TRUE about, How Hydrolysis can be prevented? Select all that apply

a)

To formulate the drug in a dry powder form to be reconstituted before administration

b)

To eliminate or reduce water from the formulation

c)

To apply a waterproof coating

d)

Add buffering agents to control pH

e)

Select appropriate storage conditions (e.g., refrigerator)

13.

The loss of electrons from one molecule and the receipt of electrons by another molecule.

a)

Hydrolysis

b)

Oxidation

14.

Which of the following is accelerated by oxygen, light and moisture and we can see signs of change in color, precipitation or odor?

a)

Hydrolysis

b)

Oxidation

15.

Which drugs classes are affected within the loss of electrons from one molecule and the receipt of electrons by another molecule? Select all that apply

a)

aldehydes

b)

alkaloids

c)

alcohols/phenols/sugars

d)

unsaturated fats and oils

e)

lactones

16.

Which of the following statements is TRUE if we want to avoid oxidation? Select all that apply

a)

Add buffering agents to control pH

b)

reduce water from formulation

c)

add antioxidants

d)

by adding ascorbic acid,

sodium sulfite,

a-tocoferol

e)

to apply a waterproof coating

17.

Which of the following excipients can be added in pharmaceutical formulations to prevent oxidation ? Select all that apply

a)

sodium sulfite

b)

ascorbic acid

c)

a-tocoferol

d)

add water

18.

Ability to retain sterility or resistance to microbiological growth

a)

Hydrolysis

b)

Oxidation

c)

Microbiological

19.

Which of the following titles provide the acceptable total aerobic microbial count and total combined yeast and molds count?

a)

USP-NF {158} Microbiological Examination of Sterile Products

b)

USP-NF {111} Microbiological Examination of Nonsterile Products

20.

Which of the following are considered sources of Microbiological contamination resulting because poor aseptic techniques? Select all that apply

a)

Air

b)

Water

c)

Raw materials

d)

Personnel

21.

Which of the following are TRUE of how can we prevent microbiological instability? Select all that apply

a)

Using Benzoic acid

b)

Often associated with a process failure => reassess GMP/GLP

c)

Using Parabens

d)

Using Benzalkonium Chloride

e)

Using antimicrobial preservatives

22.

Most water based formulations WILL REQUIRE an addition of an antimicrobial preservative to maintain microbiological stability of the drug product.

a)

True

b)

False

23.

Which of the following describes the stability of drug formulations at specified storage conditions (light, temperature, humidity)?

a)

shelf life

b)

peak time

c)

long half life

d)

therapeutic index

24.

Which of the following is a TRUE statement regarding SHELF LIFE as a kinetic parameter?

a)

10% of API remains unchanged AND 90% of API degraded by this time

b)

90% of API remains unchanged AND 10% of API degraded by this time

c)

50% of API remains unchanged AND 50% of API degraded by this time

d)

9% of API remains unchanged AND 91% of API degraded by this time

25.

Know this (time has been setup for 10 minutes to memorize)

a)

Yes

b)

No

26.

Expiration date and shelf life are always link to which of the following?

a)

tortuosity of matrix

b)

specific storage conditions (light, temperature, humidity)

c)

porosity the formulation has

d)

60 days after the product has expired, it can be still used

27.

Which of the following statements is TRUE about Controlled room temperature?

a)

maintained thermostatically usual and customary working environment of 20 C to 25°C with a permissible deviation between 30°C and 40°C

b)

maintained thermostatically usual and customary working environment of 2 C to 8°C with a permissible deviation between 30°C and 40°C

c)

maintained thermostatically usual and customary working environment of 20 C to 25°C with a permissible deviation between 15°C and 30 °C

d)

maintained thermostatically usual and customary working environment of 2 C to 8°C with a permissible deviation between 8°C and 15 °C

28.

Which of the following climate zones is represented in ZONE 1?

a)

Mediterranean (21.6°C & 52% RH)

b)

Temperate (20°C & 42% RH)

29.

Which of the following climate zones is represented in ZONE 2?

a)

Temperate (20°C & 42% RH)

b)

Mediterranean (21.6°C & 52% RH)

30.

Which of the following is TRUE about the Accelerated stability testing which is run 40 C and has a higher humidity of 75%?

a)

cover period for 12 months

b)

cover period for 6 months

31.

ICH - International Conference on Harmonization of Technical Requirements for the Registration of Pharmaceuticals for Human Use regulates the stability testing.

a)

True

b)

False

32.

Know this

a)

Yes

b)

No

33.

Which of the following are TRUE about Accelerated Stability Testing? Select all that apply

a)

12 months covered by data submission

b)

6 months covered by data submission

c)

The reaction rates (k) are obtained by plotting the drug concentration vs time

d)

Samples are stored at elevated temperatures

e)

The Arrhenius Eq. is used to predict the stability at room temperature

34.

The rate constant for degradation at RT is obtained by which of the following?

a)

florification

b)

extrapolation

c)

exploration

d)

translocation

35.

Know how to calculate this

a)

Yes

b)

No

36.

Which of the following is independent of reaction order and estimates the shelf-life at a new temperature when the shelf life at an original temperature is known?

a)

K

b)

Q10

c)

A

d)

R

37.

Remember the most used values for Q are 2,3,4.

a)

Yes

b)

No

38.

An antibiotic solution has a shelf life of 48 hours in the refrigerator (5°C). What is its estimated shelf-life at room temperature (25°C)? Round to tenth decimal

a)

5.3

b)

8.33

c)

8.3

d)

9.3

39.

Calculate the shelf life (t90) of the following drug? No units

(a)  

40.

For a first-order reaction, the initial concentration of a drug is 120 mg/mL. The specific rate constant k is obtained from an Arrhenius plot and is equal to 2 × 10−5 h−1 at 25°C (77°F). What is the shelf-life of this product? Express value only in days

(a)  

41.

An antibiotic solution has a shelf life of 24 hours at room temperature (25C). What is its estimated shelf life in the refrigerator (5C)? Solve assuming that the Q10 = 2. Express value with units (hours)

(a)  

42.

The Q10 approach is independent of reaction order and estimates the shelf-life at a new temperature when the shelf life at an original temperature is known.

a)

True

b)

False

43.

The Q10 approach is dependent of reaction order and estimates the shelf-life at a new temperature when the shelf life at an original temperature is known.

a)

True

b)

False

44.

For every 10 °C increase in temperature the reaction rate doubles.

a)

True

b)

False

45.

For every 20 °C increase in temperature the reaction rate doubles.

a)

True

b)

False

46.

The Arrhenius Equation shows that the rate increases exponentially as temperature rises.

a)

True

b)

False

47.

The Arrhenius Equation shows that the rate increases exponentially as temperature drops.

a)

True

b)

False

48.

The Arrhenius Equation has an Empirical relationship showing the temperature effect on chemical reactions.

a)

True

b)

False

49.

The Arrhenius Equation requires the reaction rate constant.

a)

True

b)

False

50.

The Arrhenius Equation DOES NOT require the reaction rate constant.

a)

True

b)

False

51.

Stability is officially defined as the time lapse during which the drug product retains, within specified limits, the same properties and characteristics that it possessed at the time of manufacture.

a)

True

b)

False

52.

Stability is officially defined as the time lapse during which the drug product looses, within specified limits, the same properties and characteristics that it possessed at the time of manufacture.

a)

True

b)

False