Dear sir, Give 5 example of decomposition reaction in our daily day to day life

Solution
A decomposition reaction is a type of chemical reaction in which a compound breaks down into two or more substances.
Examples-
1. Hydrogen peroxide bubble up when you pour it on a wound. That’s a decomposition reaction.

$2{\mathrm{H}}_2{\mathrm{O}}_2\to 2{\mathrm{H}}_2\mathrm{O} + {\mathrm{O}}_2$

2. When you open a fresh soda, the fizzing reaction that occurs is the result of a decomposition reaction:

${\mathrm{H}}_2{\mathrm{CO}}_3\to {\mathrm{H}}_2\mathrm{O}+{\mathrm{CO}}_2$ 

​​​3. ​Another decomposition reaction occurs when water (H2O) breaks down to produce hydrogen (H2) and oxygen (O2) gases . This happens when an electric current passes through the water, as illustrated below. The equation for this reaction is:    

$2 {\mathrm{H}}_2\mathrm{O} \to 2 {\mathrm{H}}_2 + {\mathrm{O}}_2$

4. While baking a cake with baking powder (sodium bicarbonate), decomposition leads to the formation of carbon dioxide, water and sodium carbonate.
$2{\mathrm{NaHCO}}_3\to {\mathrm{Na}}_2{\mathrm{CO}}_{3 }+ {\mathrm{CO}}_2+ {\mathrm{H}}_2\mathrm{O}$

5. Photographic films have a coating of silver bromide, which on exposure to light splits into silver and bromine.
$2 \mathrm{AgBr} \left(\mathrm{s}\right) + \mathrm{sunlight} \to 2 \mathrm{Ag} \left(\mathrm{s}\right) + {\mathrm{Br}}_2 \left(\mathrm{g}\right)$