1. Which of the following investigations are performed during preformulationinvestigations of pharmaceuticals?
a. Solubility investigations
b. Pka determination
c. Stability investigations
d. All of the above

2. What is required from an excipient?
a. It has its own pharmacological effect
b. It should not cause allergy
c. It entirely influences the effect of the pharmacon
d. Compatibility with the active agent

3. BCS classification classifies the drugs on the basis of:
a. Solubility
b. Diffusivity
c. Solubility and permiability
d. Permiability

4. Study of physicochemical properties of the drug prior to manufacture is called as:
a. Preformulation
b. Assay
c. Quality control
d. Validation

5. The package which has direct contact with the formulation is called as....
a. Pharmaceutical packaging
b. Primary packaging
c. Tertiary packaging
d. Secondary packaging