FOOD TECHNOLOGY (30/08/2021)

Q1. ________ Is Due To The Autoxidation Of Milk Fat In Sweetened Condensed Milk.

A.  Tallowy Flavor
B. Metallic Flavor
C. Brown Discoloration
D. Fat Separation

ANSWER – A.  Tallowy Flavor

  • Explanation – The Autoxidation Of Milk Fat Gives It A Tallowy Flavor. It Does Not Happen Anymore, But It Can Happen If The Finished Product Is Exposed To Air And Light For An Extended Period Of Time, As Well As In Plants That Still Use Copper Vacuum Pans And Copper Forewarmers.


Q2. Size Reduction By Serrated Roll Crusher Is By?

A. Compression
B. Shear
C. Impact
D. All Of The Above

ANSWER – D. All Of The Above

  • Explanation – The Toothed Roll Crusher Is Another Name For A Serrated Roll Crusher. In This Sort Of Crusher, The Rolls Are Serrated As Needed. These Crushers Are Far More Adaptable Than Smooth Roll Crushers. Compression, Impact, And Shear Are Used To Reduce The Size Of The Material, Rather Than Just Compression As In Smooth Roll Crushers. Break And Reduction Rolls In Wheat Milling Are An Example.


Q3. Which One Of The Following Dryers Are Used To Disperse (Atomize) The Liquid Food As A Fine Droplet Into Very Hot Air? 

A. Belt Dryer
B. Bin Dryer
C. Spray Dryer
D. Grain Dryer

ANSWER – C. Spray Dryer

  • Explanation- To Disperse The Liquid Or Slurry Into A Controlled Drop Size Spray, All Spray Dryers Employ An Atomizer Or Spray Nozzle. Rotary Disc And Single-Fluid High-Pressure Swirl Nozzles Are The Most Prevalent. Although Atomizer Wheels Are Known To Produce A Wider Particle Size Dispersion, Both Systems Provide A Consistent Particle Size Distribution.


Q4. Identify The Type Of Airflow In A Dryer In Which Low Final Moisture Content Is Difficult To Achieve.

A. Parallel Flow
B. Counter Current Flow
C. Centre Exhaust Flow
D. Crossflow

ANSWER: A. Parallel Flow

  • Explanation: Wet Product And Hot Air Both Move In The Same Direction In A Parallel Or Co-Current Airflow Configuration. The Main Disadvantage Of A Parallel Airflow Arrangement Is That It Is Difficult To Produce A Low Moisture Content In The Finished Product Since Cool Moist Air Travels Across Dry Food At The Exit.


Q5. Which One Of The Following Components Are Used In Plate-Type Heat Exchangers To Prevent Leakage?

A.  Followers
B. Flights
C. Gaskets
D. Tie Bolts

ANSWER – C. Gaskets

  • Explanation – The Fluid Used In Plate Heat Exchangers Can Be Either A Liquid Or A Gas. Gaskets And Plates Are Used To Keep The Flowing Mediums Separated And From Combining; Gaskets Are Only Affixed To One Side Of Each Plate. Gaskets Also Aid In The Prevention Of Leakage. The Plates Are Clamped Together Using Clamping Bolts And Slung On A Carrying Bar.


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