JEE Main Chemistry question

Which substance gives a different flame colouration from the others?

(A)Nitre
(B)Caustic potash
(C)Potassium chloride
(D)Table saltCorrect

Answer: (D)

Solution

Nitre (), caustic potash (KOH) and potassium chloride are all potassium compounds and give the characteristic lilac/violet potassium flame colour. Table salt

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Question ID VK-137888