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Question
Four samples of arhar dal were taken in four test tubes with some water in each and
labelled P,Q, R and S. A few drops of the following were added to these test tubes,
water to test tube P, HCl to test tube Q, NaOH to test tube R and alcohol to test tube S.
We would be able to confirm adulteration of the dal with metanil yellow in test tubes :
Four samples of arhar dal were taken in four test tubes with some water in each and
labelled P,Q, R and S. A few drops of the following were added to these test tubes,
water to test tube P, HCl to test tube Q, NaOH to test tube R and alcohol to test tube S.
We would be able to confirm adulteration of the dal with metanil yellow in test tubes :
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Solution
The correct option is A Q
Metanil yellow adulteration in foods can be identified upon addition of HCl to the solution.
As HCl with metanil yellow gives pink colour.
Therefore, the adulteration could be confirmed only in test tube Q.
Hence the correct option is A.
Metanil yellow adulteration in foods can be identified upon addition of HCl to the solution.
As HCl with metanil yellow gives pink colour.
Therefore, the adulteration could be confirmed only in test tube Q.
Hence the correct option is A.
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