Question

15. (a) A stain of curry on a white cloth becomes reddish brown when soap is
scrubbed on it? Why?
(b) When this cloth is washed with plenty of water, it again turns yellow.
Why?
(e) Name any two natural indicators.
PL/2
P.T.O.​

Answer 1

Answer:

(e) Two natural indicators

Explanation:

1. Hibiscus flower extract

2. Red Cabbage extract

(b) The acid on the curry reacts with the base in the detergents to form the reddish brown colour

Answer 2

Answer:

It contains turmeric. Turmeric is an indicator which gives red colour with a base since soap is a base so we get red colour

(B) turmeric , litmus