NEET2011Chemistryp Block Elements (Group 13 & 14)Actual
Which of the following statements is incorrect?
Options
- APure sodium metal dissolves in liquid ammonia to give blue solution
- BNaOH reacts with glass to give sodium silicate
- CAluminium, reacts with excess NaOH to give Al ( OH )₃
- DNaHCO ₃ on heating gives Na ₂ CO ₃
Correct answer
C. Aluminium, reacts with excess NaOH to give Al ( OH )₃
Step-by-step solution
Aluminium being amphoteric reacts with aqueous alkalies with the evolution of H ₂ gas. 2 Al (s) +2 NaOH (a q)+6 H ₂ O (l) 2 Na ⁺ [ Al ( OH )₄ ]⁻(a q)+3 H ₂(g) sodium tetrahydroxoaluminate (III).