Food Engineering

Unit Operations

Question 1
Marks : +2 | -2
Pass Ratio : 100%
Mixing index is applicable for mixing of solids at zero time.
True
False
Explanation:
Mixing index is applicable for mixing of solids at zero time.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Statement 1: Kneaders are specially used for pastry/viscous liquids in the food industry.
True, False
True, True
False, False
False, True
Explanation:
Kneaders are specially used for pastry/viscous liquids in the food industry. Kneaders are used for mixing dough with fats and making them homogeneous mixtures.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is true about loss factor of food?
It is desirable quality of food
It is the ability of food to absorb waves
It is represented by Ɛ
All of the mentioned
Explanation:
All the given factors are true about loss factor.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Statement 1: NPr= (Cpm)/kl
True, False
True, True
False, False
False, True
Explanation:
NGz= (Cpm)/kl and NPr= (Cpμ)/k.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
If the aperture size of the filtration medium is too small, it causes high pressure drops.
True
False
Explanation:
If the aperture size of the filtration medium is too small, it causes high pressure drops.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
When q=(Heat required to convert one mole of feed to saturated vapor)/(Molar heat of vaporization of feed)
True, False
True, True
False, False
False, True
Explanation:
q=0 means the slope is a horizontal line. q=1 means the slope is a vertical line. Or q<1 means the slope is negative.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Statement 1: Bubble point means the feed is at saturated vapor.
True, False
True, True
False, False
False, True
Explanation:
Dew point means the feed is at saturated vapor. Bubble point means the feed is at boiling point.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is NOT a method used for size reduction?
Cutting
Impact
Burning
Shear
Explanation:
Burning is NOT a method used for size reduction.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Statement 1: Vapor phase is always more of volatile components.
True, False
True, True
False, False
False, True
Explanation:
Vapor phase is always more of volatile components. Liquid phase is always more of high boiling point liquids.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is the real extraction application of SCFE?
Cholesterol from egg
Nicotine from tobacco
Cholesterol from egg & Nicotine from tobacco
None of the mentioned
Explanation:
Both of the mentioned are real extraction applications of SCFE.