Question

1. What will you observe when : (a) a drop of sodium hydroxide is added to blue litmus ?
(b) a drop of hydrochloric acid is added to China rose indicator ?
(c) a drop of dilute sulphuric acid is added to red-cabbage juice?​

Answer 1

Answer: a) No color change.

Explanation:

a) When blue litmus is dropped in basis medium then it shows no change but when it is dropped in acidic medium, it changes its color to red. Sodium hydroxide is a base and thus it has no effect on a blue litmus paper but it changes red litmus to blue.

b) when a drop of hydrochloric acid is added to China rose indicator it will change into dark pink or magenta color which shows that the solution is acidic.

e)when a drop of dilute sulphuric acid is added to red cabbage juice it turns into pink colour which shows that the solution is acidic.

Answer 2

Answer:

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