Question

Long Answer

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 drap on dilute sulphuric acid is added to red-cabbage juice? ​

Answer 1

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(a) A 'drop of sodium hydroxide' is added to blue litmus paper remains change. Litmus paper is used as an acid base indicator. If an acid contact with blue litmus paper than it changes to red colour.

b]china rose indicator is light pink in colour and when acid added to it colour changes to magenta and base added to it colour changes to green.

c]Red cabbage contains a chemical called anthocyanin. This changes colour depending on the acidity. It turns a pink/red colour in the presence of an acid, is purple when neutral and when added to a basic substance turns blue or green.

Answer 2

Answer:

these are the Anders 1:litmus

2:China rose

Explanation:

3:red cabbage

and whish standard are u studying please anser me in comment