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Question

A yellow coloured amphoteric oxide X react with caustic soda to  give a colourless salt of sodium plumbate and water. What is X?


  1. Potassium oxide

  2. Lead oxide

  3. Zinc oxide

  4. Sodium oxide


Solution

The correct option is B

Lead oxide


Lead oxide reacts with sodium hydroxide to give sodium plumbate and water.

PbOYellow+2NaOHNa2PbO2Sodium plumbateColourless soluble+2H2O

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