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Question

When a colourless compound X reacts with caustic soda, white precipitate of metal hydroxide Y is formed along with sodium nitrate. What is X?


A

Calcium nitrate

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B

Ferrous sulphate

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C

Ferric chloride

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D

Copper sulphate

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Solution

The correct option is A

Calcium nitrate


When calcium nitrate reacts with sodium hydroxide (caustic soda), a white precipitate of calcium hydroxide along with sodium nitrate.

Ca(NO3)2Colourless+2NaOHColourless Ca(OH)2White precipitate + 2NaNO3Colourless


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