Reation with Metals

Q.

Which of the following gas is formed when copper reacts with a hot dilute nitric acid?

1. N₂O

2. N₂O₅

3. NO₂

4. NO

Q.

Which of the following reactions shows nitric acid as an oxidizing agent?

1. $C+4HN{O}_3\to C{O}_2+2H_{2}O+4N{O}_2$

2. $K_{2}O+2HN{O}_3\to 2KN{O}_3+H_{2}O$

3. $S+6HN{O}_3\to H_{2}S{O}_4+2H_{2}O+6N{O}_2$

4. $3Zn+8HN{O}_3\to 3Zn(N{O}_3{)}_2+4H_{2}O+2NO$

Q.

Which of the following reactions shows the acidic character of nitric acid?

1. $C+4HN{O}_3\to C{O}_2+2H_{2}O+4N{O}_2$

2. $K_{2}O+2HN{O}_3\to 2KN{O}_3+H_{2}O$

3. $S+6HN{O}_3\to H_{2}S{O}_4+2H_{2}O+6N{O}_2$

4. $ZnO+2HN{O}_3\to Zn(N{O}_3{)}_2+H_{2}O$

Q.

$CuO+2HN{O}_3\to Y+H_{2}O$

$\text{What is Y ?}$

1. $2Cu(N{O}_2{)}_2$

2. $CuN{O}_3$

3. $C{u}_2(N{O}_3{)}_4$

4. $Cu(N{O}_3{)}_2$

Q.

When cupric oxide reacts with dilute nitric acid, it forms

1. Cuprous oxide

2. Copper nitrite

3. Copper nitrate

4. Copper nitride

Q.

What is/are the produts formed when manganese is treated with 1% nitric acid?

1. $H_2$

2. $Mn(N{O}_3{)}_2$

3. $N{O}_2$

4. $H_{2}O$

Q.

Which gas is released when iron reacts with conc nitric acid?

1. Nitrous oxide

2. Nitric oxide

3. Nitrogen dioxide

4. None of the above

Q. Match the given metal salt, non-metal and metal with the gases evolved, when they react with $dil.HN{O}_3$

1. $S{O}_2$
2. $N{O}_2$
3. $NO$

Q. Complete the given reaction.

$Hg{\left(N{O}_3\right)}_2\underset{}{\overset{\Delta }{\to }}N{O}_2+O_2+$.

1. $Hg$
2. $HgO$
3. $H{g}_3{N}_2$

Q. Identify the compounds/elements which release $N{O}_2$, on reacting with concentrated nitric acid.

1. $Zn$
2. $Fe$
3. $P$
4. $C$
5. $Cu$
6. $Zn(OH{)}_2$
7. $K_{2}O$
8. $Ca(S{O}_3{)}_2$