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Tests for acetone - Indigo test and Iodoform test
(a) Indigo test: When a small amount of orthonitrobenzaldehyde is added to approximately 2 ml. of acetone and it is diluted along with KOH solution and stirred. A blue colour of indigotin is produced or formed.
(b) Iodoform test: Acetone provides iodoform test along with iodine and sodium hydroxide or iodine and ammonium hydroxide.
The total number of valence electrons in 4.2 gm N - 3 of ion is ( N A is the Avogadro's number): (1) 1.6N A (2) 3.2N A
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PERIODIC TABLE and PERIODICITY OF ELEMENT
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