In an experiment, Radha took small amounts of an unknown food item in a test tube. Then, she added two drops of copper sulphate solution in the test tube along with a few drops of caustic soda solution. After a few minutes, the colour of the food item changed to violet.

In the given experiment, the change in colour of the food item to violet indicates the presence of

Fats

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Proteins

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Vitamins

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Carbohydrates

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Solution

The correct option is B
Proteins

The change in colour of the food item to violet after the addition of copper sulphate and caustic soda solution indicates the presence of proteins in the food item.

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(i) Take a small quantity of the food item in a test tube, add 10 drops of water to it and shake it.

(ii) Make a paste or powder of food to be tested.

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(iv) Add 2 drops of copper sulphate solution to it.

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(b) ii, i, iv, iii

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The correct option is B ProteinsThe change in colour of the food item to violet after the addition of copper sulphate and caustic soda solution indicates the presence of proteins in the food item.

The correct option is B
Proteins

The change in colour of the food item to violet after the addition of copper sulphate and caustic soda solution indicates the presence of proteins in the food item.