Sam conducted an experiment in which a blue coloured solution 'A' was added to the solution to be tested. It changed the colour of the solution to brick red due to the presence of glucose. Identify 'A'.

Iodine

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Benedict's solution

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Biuret solution

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Starch

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Solution

The correct option is B Benedict's solution
Benedict's solution is a mixture of sodium hydroxide, copper sulphate and tartaric acid. It is blue in colour. 5-6 drops of this solution is added to a test tube containing the item to be tested. Presence of glucose is indicated by the appearance of a brick red precipitate.

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