When copper sulphate and caustic soda are added to a food sample, a violet color indicates the presence of proteins in the food.

True

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False

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Solution

The correct option is A True
When copper sulphate and caustic soda are added to food sample, a violet color indicates the presence of proteins in the food.

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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.

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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.

(iii) Add 10 drops of caustic soda solution to the test tube and shake well.

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When copper sulphate and caustic soda are added to a food sample, a violet color indicates the presence of proteins in the food.

The correct option is A TrueWhen copper sulphate and caustic soda are added to food sample, a violet color indicates the presence of proteins in the food.

The correct option is A True
When copper sulphate and caustic soda are added to food sample, a violet color indicates the presence of proteins in the food.