DMK30122 QUIZ

In wet rendering, melted fat can be separated from water by the following processes, EXCEPT

• Skimming

• Filtration

• Centrifugation

These are oilseeds preparation processes before oil is extracted, EXCEPT

• Screw Pressing

• Flaking

• Cleaning

• Dehulling

These are components of a lab soxhlet extractor, EXCEPT

• Extraction thimble

• Condenser

• Receiving flask

• Vacuum tubing

Which ONE of these processes is NOT a part of physical oil refining?

• Bleaching

• Degumming

• Deodorization

• Neutralization

Which ONE of these analyses is considered as sensory evaluation?

• Peroxide Value

• Color

• Free fatty acid value

• Iodine Value

Degumming utilizes __________ to reduce phospholipid content in crude oil

• Butyric Acid

• Phosphoric Acid

• Sulphuric Acid

• Boric Acid

Neutralisation requires treatment with aqueous alkali to remove ________

• Water

• Oxidation products

• Free acids

• Traces of soap

Bleaching requires heating the oil at 90–120ºC with acid-activated _________

• Nickel catalyst

• Enzyme

• Sodium hydroxide

• Bleaching earth

In chemical refining, washing of oil with soft water is done to reduce the _________ content

• Soap

• Bleaching earth

• Phospholipid

• Trace metal

Deodorisation is the final refining step and requires the oil to be sparged with __________ under reduced pressure.

• Hot water

• Nitrogen gas

• Steam

• Hydrogen gas