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Describe the test for the following …

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Describe the test for the following nutrients (1) starch (2) proteins (3) fats
  • 3 answers

Hasnain Raza 6 years, 5 months ago

FATS - A small quantity of given food item (Almonds) is taken . It is wrapped in a piece of paper and crushed . The paper is opened and straightened . OBSERVATION - A Oily patch is appeared on paper . Oily patch indicates the presence of fats in a given food .

Hasnain Raza 6 years, 5 months ago

Protiens- A small quantity of food item (milk or grinded dal) is taken . ten drops of water is added to it and then . Two drops of solution of copper sulphate and 10 - drops of caustic soda are added to it. OBSERVATION - The colour of given food item changes to voilet . The voilet colour indicates the presence of protien in a given food item . (Milk or grinded dal

Hasnain Raza 6 years, 5 months ago

A small quantity of given food item (potato) is taken 2-3 drops of dilute iodine solution is added to it Observation - the colour of food item changes to blue -black This colour indicates the presence of strach in a given food material (potato)
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