Shivani took 2 ml of food extract in a test-tube and added few drops of conc. hydrochloric acid to it. She observed magenta colour in the test-tube, which indicates the presence of :
(a) metanil yellow in the food extract
(b) turmeric powder in the food extract
(c) argemone oil in the food extract
(d) saw dust in the food extract
CBSE Class IX Science VSA (1 Mark)
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(a) Metanil yellow gives magenta colour.
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