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5/75 MCQs for:
MATTER - PROPERTIES AND TRANSFORMATION: Chemistry Of Elements - Identification Of Ions
Which anion, when tested with silver nitrate solution acidified with nitric acid, gives a white precipitate that is insoluble in both dilute and concentrated ammonia solution?
What colour flame is observed when a small amount of a sodium compound is introduced into a Bunsen flame?
A sample solution gives a blue precipitate with sodium hydroxide solution. The precipitate is insoluble in excess NaOH. Which ion is likely present?

When sodium hydroxide solution is added drop wise to a test solution, and then in excess, a reddish-brown gelatinous precipitate which is insoluble in excess sodium hydroxide indicates the presence of?

What is the colour of the precipitate formed when aqueous ammonia is added to a solution containing Fe³⁺ ions?