Question

5. Three solution A, B and C have pH 2, 8 and 7 respectively.

A. Which one of these will turn blue litmus paper into red.
B. Which one of these will turn china rose indicator into green
C. Which one of these will not change colour of any indicator

Answer 1

A. The solution with a pH of 2 will turn the litmus paper red

B. The solution with a pH of 8 will turn the China rose indicator green

C. The solution with a Ph of 7 will not change the color of the blue litmus indicator or of the China rose indicator

Step-by-step explanation:

Blue litmus paper will only change color if it is dipped into an acidic mixture which turns it red. It will not change color at all in a basic or neutral Ph solution.

China rose turns dark pink in an acidic solution and green in a basic solution. However it has no change in color with a neutral solution.