Question

Alkenes usually shows which type of reaction
A.Addition
B.Substitution
C.Elimination
D.Superposition

Answer 1

Before answering this question, we should know what an alkene is. The class of hydrocarbons which contains only carbon and hydrogen, are the unsaturated compounds that have at least one carbon to carbon double bond. There is another term that can be used to describe alkenes, i.e olefins. The reactivity of alkenes is greater than the reactivity of alkanes due to the presence of a double bond.

Complete answer:
Let’s study first, what is a chemical reaction?
The symbolic representations or descriptions of chemical reactions in which the reactants and products are shown in terms of their respective chemical reaction. The chemical equation should be balanced because the number of atoms on both sides of the equation should be equal as it sticks to the Law of the conservation.
In organic chemistry, the chemical reaction in which two or more reactants are reacted together to form a single large product is known as an addition reaction. The chemical compounds having multiple bond character which can undergo an addition reaction as a double or triple bond which is usually broken to form single bonds as per the requirement. It is essentially a reverse decomposition reaction.
A chemical reaction in which one functional group in a chemical compound replaces another functional group in the reaction is known as a substitution reaction. They are very important in organic chemistry.
The reaction in which two substituents are removed from a molecule in either a one or two-step mechanism is known as the elimination reaction of organic reaction. E2 reaction is the one-step reaction whereas the E1 reaction is the two-step mechanism.
So, alkenes show an additional reaction.

Option (A) Addition is correct.

Note:
The chemical Symbols are representative of various chemicals, elements, and various actions in chemistry. If someone wants to pursue chemistry, They should be familiar with all the symbols. The coefficients that are seen in the chemical equations are used to represent the amount of that particular substance present in the equation.