Question

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?

1. Soap is acidic in nature
2. Soap is basic in nature
3. Turmeric is a natural indicator which gives reddish tinge in bases
4. Turmeric is a natural indicator which gives reddish tinge in acids

पर्याय

• i and ii

• ii and iii

• i and iv

• ii and iv

Answer 1

ii and iii