QUALITY CONTROL 2 WITH INSTRUMENTATION QUESTIONS

TEST I- IDENTIFICATION

ADSORPTION AND PARTITION 1. Two of the basic principles upon which chromatographic separation is dependent on.,aside from the ion-exchange and molecular exclusion.

GAS CHROMATOGRAPHY 2. A type of chromatography which uses inert gas, as the mobile phase.

SILICA GEL G AND ALUMINA 3. The adsorbent use in thin layer chromatography.

ELUTION CHROMATOGRAPHY 4. Commonly used to develop chromatograms.

LIGAND 5. A molecule which provides groups of attachment to metal ions.

TEST II- TRUE OR FALSE

TRUE 1. In the standardization of iodine solution, there is a need to boil the solution of arsenic trioxide to increase the solubility.

FALSE 2. The color of the complex resulting from reaction with ferrous phenanthroline is pink.

TRUE 3. If starch TS is used as an indicator, the end point is appearance of intense blue color.

FALSE 4. Indicators used in non-aqueous titrimetry is phenolphthalein.

TRUE 5. A substance which gains electrons in a redox-reaction is an oxidizing agents.

TEST III- MULTIPLE CHOICE

b 1. The type of ash where the sulfuric acid is used to whiten the ash is:

a. acid-insoluble ash b. sulfated ash c. loss on ignition

b 2. The instruments used to measure the optical activity of the sample is:

a. refractometer b. polarimeter c. spectrometer

a 3. Which of the following statement/s is/are correct?

I. in azeotropic method of water analysis, toluene is used as solvent

II. in AMOWA, toluene and xylene are used as solvents

III. in AMOWA, toluene, xylene, and water are used as solvents

a. I only b. I, II only c. I, II, III d. NOTA

a 4. Primary standard used to standardized karl fischer reagent is:

a. sodium tartrate b. potassium hydogen phthalate

b 5. The sampling and examination of all raw materials received by the factory is a function of the:

a. documentation section b. materials inspection c. biological testing lab. d. analytical lab.