Hich of these reactions is a combustion reaction?
burning wood
decomposition of water
production of food by plants with the of the sun's energy
rotting of fruits and vegetables
nextreset

Answer : The correct option is, burning wood.

Explanation :

Combustion reaction : It is a type of chemical reaction in which a hydrocarbon molecule react with oxygen to give or produce carbon dioxide and water as a product.

Decomposition reaction : It is a type of chemical reaction in which the larger molecule decomposes into two or more smaller molecules.

Oxidation reaction : It is a type of chemical reaction in which the substance oxidizes by gain of oxygen or react with oxygen.

From this we conclude that, the burning of wood is an example of combustion reaction because wood is a type of hydrocarbon that react or burn with oxygen to give carbon dioxide and water as a product.

Hence, the correct option is, burning wood.

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it