Question

addition reaction what is

Answer 1

a reaction in which one molecule combines with another to form a larger molecule with no other products

Answer 2

Answer:

${\boxed{\tt{Addition\:Reaction}}}$

$\implies$ The reaction in which a reagant completely add to a reactant without the removal of small molecules are called Addition Reaction

$\star$Addition of Hydrogen in the presence of catalysts like palladium or nickel, to unsaturated hydrocarbons yeild saturated hydrocarbons.

$\star$ Commonly it is used in hydrogenation of vegetable oils using a nickel catalyst.