Q1. Fiske And Rao Method Is Used For The Estimation Of?

A.  Phosphorous
B. Pentathonic Acid
C. Pectin
D. Phytates

ANSWER: A. Phosphorous

• Explanation: Inorganic Phosphate Content Was Measured By The Method Of Fiske And Rao. It Is A Colorimetric Method For Determining Inorganic Phosphate That Uses Ammonium Molybdate And 1amino2naphthol4sulfonic Acid To Produce A Blue Color When The Sample Is Treated. Fiske And Rao Method Is Used For The Estimation Of Phosphorous.

READ MORE – FOOD TECHNOLOGY (22/06/2021)

Q2. Duboi’s Method Is For The Estimation Of?

A. Calcium
B. Sugar
C. Protein
D. Vitamin D

ANSWER: B. Sugar

• Explanation: When Treated With Phenol And Concentrated Sulfuric Acid, Simple Sugars, Oligosaccharides, Polysaccharides, And Their Derivatives, Including Methyl Ethers Containing Free Or Potentially Free Reducing Groups, Take On An Orange-Yellow Colour.By Use Of This Phenol-Sulfuric Acid Reaction, Duboi’s Method Has Been Developed To Determine Submicro Amounts Of Sugars And Related Substances.

READ MORE – FOOD TECHNOLOGY (02/07/2021)

Q3. Lead Acetate Gives Which Color After Treating With A Cysteine?

A. Dark Red
B. Light Green
C. Turbid White
D. Black

ANSWER- D. Black

• Explanation– In The Presence Of Severe Alkaline Conditions At A High Temperature, Amino Acids Like Cysteine And Cystine Release Sulphur. After That, The Sulphur Reacts With The Alkali (NaOH) To Generate Na2. The Resulting Na2S Interacts With The Lead Acetate To Create Lead Sulphide, Leaving A Black Residue.

READ MORE – FOOD TECHNOLOGY (12/06/2021)

Q4. Reagent Used In Selivanoff’s Test Is?

A. Recorcinol
B. Napthol
C. Kojic Acid
D. Potassium Iodate

ANSWER – A. Recorcinol

• Explanation– Selivanoff’s Test Uses Resorcinol And Strong HCl As Reagents. Polysaccharides And Oligosaccharides Are Acid Hydrolyzed To Produce Simpler Sugars. Ketones Dehydrate More Quickly Than Aldoses.

READ MORE – FOOD TECHNOLOGY ( 11/06/2021)

Q5. RQ Is Zero In?

A. Succulents
B. Germinating Fatty Seeds
C. Maturing Fatty Seeds
D. Anaerobic Respiration

ANSWER – A. Succulents

• Explanation  –  Respiratory Quotient Is Defined As The Ratio Of Carbon Dioxide Eliminated To That Of Oxygen Consumed. Succulents That Are Dark In Colour Undergo Partial Oxidation. The Value Of R.Q. Is 0 When Partial Oxidation Occurs. It’s Because No Carbon Dioxide Is Emitted During Incomplete Oxidation.

READ MORE – FOOD TECHNOLOGY (10/07/2021)

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