Aluminium - class-X

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Multiple Choice

Which of the following statement is incorrect?

  1. $Al$ reacts with excess $NaOH$ to give $Al{(OH)} _{3}$
  2. $NaH{CO} _{3}$ on heating gives ${Na} _{2}{CO} _{3}$
  3. Pure sodium metal dissolves in liquid ammonia to give blue solution
  4. $NaOH$ reacts with glass to give sodium silicate
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