Electrolytes and Non-electrolytes

Question 1

It is the heat which results in the change of matter without increasing the temperature

Answer 1

Heat of fusion

Question 2

A mesophase formed from the gaseous state by application of temperature and pressure that EXCEEDS THE CRITICAL POINT of gas

Answer 2

Supercritical fluid

Question 3

The temperature at which it changes its state from solid to liquid

Answer 3

Melting point

Question 4

It is the temperature at which the vapor pressure of a liquid is equal to the external or atmospheric pressure (1 atm)

Answer 4

Boiling point

Question 5

At 0.0098C and 4.58 mmHg, ice liquid water-water vapor exist in equilibrium. This is referred to as;

Answer 5

Triple point

Question 6

All combinations of phenol and water are completely miscible at 66.8C. This is termed as;

Answer 6

Upper consolute temperature (critical solution temperature)

Question 7

The study of heat changes in chemical reactions and certain physical processes

Answer 7

Thermochemistry

Question 8

Energy can be transformed from one form into another but cannot be lost, destroyed, or created. This statement is the;

Answer 8

First law of thermodynamics

Question 9

Sublimation is a term applied for what type of transformation?

Answer 9

Solid > Vapor

Question 10

It relates the number of independent variables or degree of freedom (F), number of phases that can coexist (P), and number of components making up the phases (C) in a system at equilibrium

Answer 10

Phase Rule

F= C - P + 2

Question 11

Cocoa butter (Theobroma oil) is useful as a suppository base because of its:

Answer 11

Melting point

Question 12

A heterogenous two-phase system in which the dispersed phase is distributed as particles or droplets throughout another phase

Answer 12

Dispersed system

Question 13

Dispersed phase: solid
Dispersion medium: liquid
Dispersed system: ____

Answer 13

Emulsion

Question 14

In carbonated beverages, the dispersed phase is ___

Answer 14

Gas

Question 15

Dispersed system in which the particle size is less than 1 nm

Answer 15

Colloidal dispersion

Question 16

Most pharmaceutical emulsions and suspensions are examples of

Answer 16

Coarse dispersion

Question 17

Which of the following factor/s is/are important in the delivery of drugs to the intended site of absorption with a metered dose inhaler?

I. Particle size and shape
II. Physicochemical properties of the active ingredient
III. Use of an oral adaptor

Answer 17

I and II only

Particle size and shape and physicochemical properties of active ingredient

Question 18

Diffusion is the rate-limiting step in the drug release of the following formulations

I. Transdermal patches
II. Spansule system
III. Norplant system

Answer 18

I. Transdermal patches