Question

Q6. A drop of liquid sample was put on the pH paper, paper turred blue. The
liquid sample must be of
(a) Lemon Juice
(b) HCI
(c) Sodium bicarbonate
(d)Ethanoic acid

Answer 1

Answer:it's Sodium bicarbonate

Explanation: and it is a base on pH paper the bases show the colour from dark blue to reddish orange

Answer 2

Hello mate,✌

Here is your answer:-

The solution must be of sodium bicarbonate(NaHCO3).As it is basic,it turns the pH paper blue.

Had it been Lemon juice(citric acid),Hydrochloric acid(HCl) or Ethanoic acid(CH3COOH), the pH paper would have turned red as the above three are acidic.

Hope it helps...

Please mark as Brainliest. ^_^