Oil Processing

Question 1
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is untrue about Solvent extraction of Oil?
The most common solvent used is Hexane
This process is difficult/complex for small scale operators
This suitable for materials containing low percentage of oil
None of the mentioned
Explanation:
All the statements given are true.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is true about Seed Flaking in Pre-press Solvent Extraction?
The flakes have to be very thin
The flakes have to be very thick
The flakes have to be an optimum size- neither to thick nor too thin
None of the mentioned
Explanation:
The flakes have to be an optimum size- neither to thick nor too thin in Seed Flaking in Pre-press Solvent Extraction. As thin ones are too fragile and thick ones give a poor oil yield.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Stripping Solvent off a meal is called _____
Toasting
Buttering
Jamming
Milling
Explanation:
Stripping Solvent off a meal is called Toasting.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
In Oil refining, oil is __________
De-odorized
Bleached
De-odorized & Bleached
None of the mentioned
Explanation:
In Oil refining, oil is De-odorized and bleached.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
In Solvent Extraction, the oil and miscella are moved in a ________
Co- current fashion
Counter- current fashion
Cross- current fashion
None of the mentioned
Explanation:
In Solvent Extraction, the oil and miscella are moved in a Counter current manner so that the two phases are easily removed.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
Oil Refining is a step __________
After Oil Extraction
Before Oil Extraction
Between Oil cooking and flaking in Pre- Press Solvent Extraction
None of the mentioned
Explanation:
Oil Refining is a step after Oil Extraction.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
After toasting and before Refining, Oil is _____
Used
Made into pellets by hammer mill and stored
Washed
All of the mentioned
Explanation:
After toasting and before Refining, Oil is made into pellets by a hammer mill and stored.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is NOT a step in Pre-press Solvent Extraction?
Seed Cooking
Pressing the flake
Solvent Extraction
Seed Whipping
Explanation:
Seed whipping is not a Pre-press Solvent Extraction step.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
In the Seed Cooking step of Pre-press Solvent Extraction of oil ________
Reducing oil viscosity promotes oil collection
Temperature is increased to inactive/denature the enzymes
Sometimes, very high temperature affects meal protein
All of the mentioned
Explanation:
All the given sentences are true.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
An Oil Press is called _____
Expresser
Boiler
Expeller
None of the mentioned
Explanation:
An Oil Press is called an Expeller.