Question

when a substance A turn blue litmus to red it will : (a) vanish colour of clove oil (b) vanish colour of vanilla. (c) turn phenophthelin colourless. (d) none of the above​

Answer 1

Answer:

a) acid

Explanation:

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Answer 2

When a substance A turn blue litmus to red it will (c) turn phenophthelin colourless.

• If a substance called 'A' turns a blue litmus paper red then it means substance is acidic in nature because blue litmus paper has tendency to turn into red when tested with acids.
• Phenophthelin is a chemical compound which helps to differentiate acids and bases. So, it is a type of acid-base indicator. It turns pink with bases and turns colourless with acids.
• As substance 'A' is found to be acidic so it will turn phenophthelin colourless.