Vinay observed that the stain of curry on a white shirt becomes reddish-brown when soap is scrubbed on it, but it turns yellow again when the shirt is washed with plenty of water. What might be the reason for his observation?

Q.) Vinay observed that the stain of curry on a
white shirt becomes reddish-brown when
soap is scrubbed on it, but it turns yellow
again when the shirt is washed with plenty
of water. What might be the reason for his
observation?

(I) Soap is acidic in nature

(II) Soap is basic in nature

(III) Turmeric is a natural indicator which gives reddish tinge in bases

(IV) Turmeric is a natural indicator which
gives reddish tinge in acids


(a) (I) and (II) (b) (II) and (III)
(c) (I) and (IV) (d) (II) and (IV)

Ans. (b) (II) and (III)

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