The stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence
Which of the following statements is incorrect?
1. NaHCO3 on heating gives Na2CO3
2. Pure sodium metal dissolves in liquid ammonia to give a blue solution.
3. NaOH reacts with glass to give sodium silicate
4. Aluminium reacts with excess NaOH to give Al(OH)3
Al2O3 can be converted to anhydrous AlCl3 by heating-
2. with NaCl in solid-state
3. a mixture of and carbon in dry gas
4. with gas