Q.

A colourless salt gives violet colour to Bunsen flame and also turns moistured litmus paper blue. It is

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a

Na2CO3

b

KNO3

c

K2CO3

d

CuOH2

answer is C.

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Detailed Solution

Violet colour to flame is characteristic of potassium. Also aqueous solution of K2CO3 is alkaline.KNO3 also gives violet colour but is neutral to litmus
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