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Q.

What is the colour of the flame test for sodium ?

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a

Yellow

b

Violet 

c

Red

d

Green

answer is D.

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Detailed Solution

The flame test for sodium shows yellow colour. It is possible to distinguish Group 1 metal ions from chloride-based compounds using a flame test because their colours are volatile in non-luminous flames. The flame of sodium and potassium has a powerful, sustained yellow colour. Hence, the option D is correct.

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