Decomposition Reaction

Q. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.

Q.

The decomposition reaction in which heating is involved is called thermal decomposition.

1. True

2. False

Q.

All decomposition reactions are not endothermic reactions.

1. True

2. False

Q.

Which of the following represents a decomposition reaction?

1. $A+B\stackrel{Heat}{\to }AB$

2. $AB\stackrel{Heat}{\to }A+B$

3. $A+B\stackrel{Heat}{\to }B+C$

4. $A+B+C\stackrel{Heat}{\to }X+Y$

Q.

What type of reaction is
$2KCl{O}_3\left(s\right)\stackrel{Heat}{\to }2KCl\left(s\right)+3O_2\left(g\right)?$

1. Thermal decomposition reaction

2. Photo decomposition reaction

3. Displacement reaction

4. Combination reaction

Q.

The reaction in which a single reactant breaks down to give simpler products is called __ reaction.

Q.

Conversion of $CaC{O}_3$ into $CaO$ as per the following reaction is an example of:

$CaC{O}_3\left(s\right)\stackrel{heat}{\to }Cao\left(s\right)+C{O}_2\left(g\right)$

1. Decomposition reaction.

2. Reduction reaction.

3. Oxidation reaction.

4. Displacement reaction

Q.

Lead nitrate on thermal decomposition produces

1. Green solid, Colourless gas

2. Pale yellow solid, Gas with reddish brown fumes

3. Reddish brown solid, Gas with dark green fumes

4. Pale yellow solid, Gas with reddish brown fumes

Q.

Identify the type of reaction and product(s) formed when hydrogen peroxide$H_2{O}_2$is heated.

1. Products:- Water, Carbondioxide gas

   Type of reaction:- Thermal decomposition

2. Products:- Water , Oxygen gas

   Type of reaction:- Electrolytic decomposition

3. Products:- water, oxygen gas

   Type of reaction:- Combination reaction

4. Products:-Water, Oxygen gas

   Type of reaction:- Thermal decomposition

Q. Identify the type of the reaction given below:

$2{\text{KClO}}_3\text{(s)}\stackrel{\text{Heat}}{\to }2\text{KCl(s)}+3{\text{O}}_2\text{(g)}$

1. Thermal decomposition reaction
2. Photo decomposition reaction
3. Displacement reaction
4. Combination reaction