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

Calcium hydroxide

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Ferrous hydroxide

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Ferric hydroxide

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Copper (II) hydroxide

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Solution

The correct option is A
Calcium hydroxide

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

$C a (N O_{3})_{2} C o l o u r l e s s + 2 N a O H C o l o u r l e s s \to C a (O H)_{2} W h i t e p r e c i p i t a t e + 2 N a N O_{3} C o l o u r l e s s$

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

The correct option is A Calcium hydroxide 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