Double Decomposition Reactions

Q. Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?

1. Decomposition reaction
2. Double displacement reaction
3. Combination reaction
4. Precipitation reaction

Q.

Give your observation along with equation

When sodium hydroxide is added to ferrous chloride.

Q. Which of the following reaction is double displacement reaction?

1. ${\text{FeCl}}_3+3\text{NaOH}\to {\text{Fe(OH)}}_3+3\text{NaCl}$
2. $\text{Zn}+{\text{H}}_2{\text{SO}}_4\to \text{Zn}{\text{SO}}_4+{\text{H}}_2$
3. $2\text{CO}+{\text{O}}_2\to 2{\text{CO}}_2$
4. ${\text{N}}_2+{\text{O}}_2\to 2\text{NO}$

Q. Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride, is a type of

1. Decomposition reaction
2. Double displacement reaction
3. Combination reaction
4. Redox reaction

Q. An aqueous reaction in which an insoluble product is formed is called a reaction.

1. solidification
2. sublimation
3. precipitation

Q.

What can be inferred from the following equation?

$N{a}_{2}S{O}_4\left(aq\right)+BaC{l}_2\left(aq\right)\to BaS{O}_4\left(s\right)+2NaCl\left(aq\right)$

(i) It is a double displacement reaction.

(ii) It is a precipitation reaction.

(iii) It is a decomposition reaction.

(iv) $BaS{O}_4$ is soluble in water

(v) $BaS{O}_4$ is precipitate.

(vi) Aqueous solution of sodium chloride is formed.

1. (i), (iii), (v), (vi).

2. (i), (ii), (v), (vi).

3. (i), (ii), (iv), (vi).

4. (ii), (iii), (iv), (vi).

Q.

Give one example of each of the following double displacement reaction in which

(ii) a black precipitate is formed.

Q.

Which of the following is a neutralisation reaction?

1. $NaOH+HCl\to NaCl+H_{2}O$

2. $KOH+HNO\to KNO+H_{2}O$

3. $KOH+NaCl\to KCl+NaOH$

4. $NaOH+H_{2}O\to NaO+O_2$

Q. Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?

1. Decomposition reaction
2. Double displacement reaction
3. Combination reaction
4. Precipitation reaction

Q. Which of the following is an example of a double displacement reaction?

1. ${\text{P}}_4{\text{O}}_{10}\text{(s)}+6{\text{H}}_2\text{O(l)}\to 4{\text{H}}_3{\text{PO}}_4\text{(aq)}$
2. ${\text{CO}}_2\text{(g)}+{\text{H}}_2\text{(g)}\to \text{CO(g)}+{\text{H}}_2\text{O (g)}$
3. ${\text{H}}_2\text{(g)}+{\text{O}}_2\text{(g)}\to {\text{H}}_2\text{O}\text{(l)}$
4. ${\text{CoCl}}_2\text{(aq)}+{\text{Na}}_2{\text{CO}}_3\text{(aq)}\to {\text{CoCO}}_3\text{(aq)}+2\text{NaCl(aq)}$

Q. Which of the following represent a double displacement reaction?

1. $2{\text{H}}_2\text{(g)}+{\text{O}}_2\text{(g)}\to$$2{\text{H}}_2\text{O(l)}$
2. $2\text{Mg(s)}+{\text{O}}_2\text{(g)}$$\to 2\text{MgO(s)}$
3. ${\text{AgNO}}_3\text{(aq)}+\text{NaCl(aq)}\to \text{AgCl}\text{(s)}+{\text{NaNO}}_3\text{(aq)}$
4. $2{\text{H}}_2\text{(g)}+{\text{Cl}}_2\text{(g)}\to 2\text{HCl (g)}$

Q.

The reaction given below is an example of:
$Ba\left(OH{)}_2\right(s)+2CuCNS(s)\to Ba(CNS{)}_2\left(aq\right)+2CuOH\left(s\right)$

1. Combination Reaction

2. Decomposition Reaction

3. Single displacement Reaction

4. Double displacement Reaction

Q. The reaction in which there is an exchange of ions between the reactants is known as _______.

1. combination reaction
2. decomposition reaction
3. displacement reaction
4. double displacement reaction

Q.

Which of the following is an example of a decomposition reaction?

1. Splitting of water into hydrogen and oxygen

2. Carbon completely burnt in oxygen yields carbon dioxide

3. Calcium oxide combined with water gives calcium hydroxide.

4. Oxygen combines with carbon monoxide, and carbon dioxide is formed.

Q. The reaction given below is an example of:
${\text{CuSO}}_4\text{(aq)}+{\text{H}}_2\text{S(g)}\to \text{CuS(s)}$ $\downarrow$ + ${\text{H}}_2{\text{SO}}_4\text{(aq)}$

1. combination reaction
2. displacement reaction
3. double displacement reaction
4. decomposition reaction