Properties and Reactions of Sodium Peroxide

Q. A soft silver-white metal 'A' burns with a golden-yellow flame to give a yellow power 'B, ' which on treatment with water gives a clear solution 'C'. The solution placed on $Al$ attacks this metal, liberating a gas 'D' forming a water-soluble compound 'E'. The metal 'A' dissolves in liquid $N{H}_3$ to form a deep-blue solution which is a good conductor and an excellent reducing agent. Identify 'C':

1. $Al(OH{)}_3$
2. $NaOH$
3. $LiOH$
4. $KOH$

Q. It is a pale yellow powder, but on exposure to moisture and $C{O}_2$ it turns to white. What are we talking about?

1. NaOH

2. Na₂O₂

3. Na₂O

4. 

Q. A soft silver-white metal (A) burns with a golden-yellow flame to give a yellow powder (B) which on treatment with water liberates oxygen giving a clear solution (C). The solution, when mixed with $Al$, attacks the metal, liberating a gas (D) and forming a water-soluble compound (E). The metal (A) dissolves in liquid $N{H}_3$ to form a deep blue solution which is a good conductor and an excellent reducing agent. Identify E:

1. $NaAl{O}_2$
2. $Ca(Al{O}_2{)}_2$
3. $NaOH$
4. None of these

Q. The volume of nitric oxide collected at the same time is :
[Cu=64, H=1, O=16, N=14]

1. 5.6 L
2. 11.2 L
3. 22.4 L
4. 44.8 L