Reaction with Metal Oxides

Q.

For ammonia, why is quicklime used as the drying agent?

1. None

2. $N{H}_3$ and $CaO$ react to give $N_2$ gas.

3. Because $CaO$ and $N{H}_3$ are acidic no reaction occurs.

4. Because $CaO$ and $N{H}_3$ are basic no reaction occurs.

Q.

Pick the odd member from the list giving reasons :

(a) Ammonia, sulphur dioxide, hydrogen chloride, carbon dioxide.

(b) Copper oxide, aluminium oxide, sodium oxide, magnesium oxide.

Q. Write balanced equation for the following reactions:
Aluminium powder is warmed with hot and concentrated caustic soda solution.

Q.

During ionization, metals lose electrons. This change is called ______.

1. Reduction

2. Oxidation

3. Both oxidation and reduction

4. Neither oxidation nor reduction

Q.

What are the products formed when ammonia is oxidized with copper oxide?

Q. Complete the following reaction:
$2{\mathrm{NH}}_3+3\mathrm{CuO}\to$

1. $\mathrm{Cu}+H_2+{\left(\mathrm{NO}\right)}_2$
2. $3\mathrm{Cu}+3H_{2}O+N_2$
3. $\mathrm{CuO}+H_2+N_2$
4. $3\mathrm{Cu}+3H_{2}O+N_2$

Q.

Name two oxidising agents that will oxides ${\mathrm{SO}}_2$ into ${\mathrm{H}}_2{\mathrm{SO}}_4$

Q. ${\mathrm{CO}}_2\left(g\right)+H_2\left(g\right)\to \mathrm{CO}\left(g\right)+H_{2}O\left(g\right)$
In the above reaction, is the oxidising agent.

1. ${\mathrm{CO}}_2$
2. $H_2$
3. $H_{2}O$

Q. Choose the correct pair by using the given reaction:


${\mathrm{MnO}}_2+4\mathrm{HCl}\to {\mathrm{MnCl}}_2+2H_{2}O+{\mathrm{Cl}}_2$

1. Reduced product
2. ${\mathrm{MnO}}_2$
3. Oxidising agent
4. ${\mathrm{MnCl}}_2$
5. Reducing agent
6. $\mathrm{HCl}$

Q.

Which substance gets oxidised in the following reaction?

4Na + O₂ →2Na₂O

1. O₂

2. Na

3. All of these

4. Na₂O

Q.

Ammonia is heated with black metallic oxide X to give reddish brown metal Y. What is X and Y?

1. PbO and Cu

2. CuO and Pb

3. PbO and Pb

4. CuO and Cu

Q. How to prepare
1. copper from copper oxide
2. Copper oxide from copper

Q. ${\mathrm{CO}}_2\left(g\right)+H_2\left(g\right)\to \mathrm{CO}\left(g\right)+H_{2}O\left(g\right)$
In the above reaction, is the oxidising agent.

1. ${\mathrm{CO}}_2$
2. $H_2$
3. $H_{2}O$

Q.

Ammonia is heated with black metallic oxide X to give reddish brown metal Y. What is X and Y?

1. PbO and Cu

2. CuO and Pb

3. PbO and Pb

4. CuO and Cu

Q.

What are the products formed when ammonia is oxidized with copper oxide?

1. Copper nitride and water

2. Copper nitride and water

3. Copper, water and nitrogen

4. Copper, water and nitrogen dioxide

Q. Choose the correct pair by using the given reaction:


${\mathrm{MnO}}_2+4\mathrm{HCl}\to {\mathrm{MnCl}}_2+2H_{2}O+{\mathrm{Cl}}_2$

1. Reduced product
2. ${\mathrm{MnO}}_2$
3. Oxidising agent
4. ${\mathrm{MnCl}}_2$
5. Reducing agent
6. $\mathrm{HCl}$

Q.

Write a balanced equation for chemical

combination reaction in which a metal reactswith non-metal.

Q. A reddish brown solid metallic compound X is formed on reaction of ammonia with copper oxide and Y gas is released . Identify X and Y based on the information provided. ​

1. X: Mg ; Y: $O_2$​
2. X: Na ; Y: $H_2$​
3. X: Cu ; Y: $N_2$​
4. X: Cu ; Y: ${CO}_2$​

Q. Ammonia reacts with heated metal oxides to produce the respective metals.

1. True
2. False