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The substances which turn red litmus blu...

The substances which turn red litmus blue are

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Alkalies.
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A compound A (CH_4O) on treatment with KCN gives a compound B (C_2 H_3N) which is acyanide.The compound ‘B’on partial hydrolysis gives C (C_2H_5ON) which is a neutral compound. ‘C’ on treatment with Br_2 and NaOH gives D (CH_5N) which turns red litmus blue. ‘D’ on reaction with nitrous acid gives back ‘A’. Name the conversion of ‘C’ into 'D'.

A compound A (CH_4O) on treatment with KCN gives a compound B (C_2 H_3N) which is acyanide.Thecompound ‘B’on partial hydrolysis gives C (C_2H_5ON) which is a neutral compound. ‘C’ on treatment with Br_2 and NaOH gives D (CH_5N) which turns red litmus blue. ‘D’ on reaction with nitrous acid gives back ‘A’. Identify A, B, C and D.

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Classify the following statements into two as suitable for acids and for alkalies. Sour taste, neutralize the acids, caustic taste and soapy feeling, turns red litmus to blue, turns blue litmus to red.

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