Question

Q.19. Which of the following indicator is used in detection of CO2 from water ? *

Methyl orange

Phenolphthalein

Starch

Litmus paper​

Answer 1

Answer:

methyl orange this is a correct answer

Answer 2

Explanation:

Methyl orange: Methyl orange changes its colour to yellow when added to a base or an alkali.

(b) Litmus paper: Red litmus paper turns blue, whereas blue litmus paper remains blue in a base or an alkali.

(c) Red cabbage extract: Red cabbage extract turns greenish-yellow in basic solutions.