Question

Petroleum mainly contains:
a.) Mixture of alkenes
b.) Mixture of esters
c.) Mixture of aromatic compounds
d.) Mixture of olefins

Answer 1

Hint: To solve this question, we have to understand the basic definition of petroleum and how it is used. Petroleum products are the materials which are derived from crude oil also known as petroleum.

Complete Solution :
- Petroleum is a naturally occurring fluid which is extracted from the earth's surface. It is the source of many fuels which we use in our daily life. Components present in petrol are separated by many processes such as fractional distillation.
- Petroleum is a mixture of hydrocarbons and it is made from compressed organic matter. It is a fossil fuel formed by degradation of many organisms and compounds for over a million years. Hence, petroleum is generally black in colour or dark coloured. It is also known as rock oil or black gold.
- Petroleum mainly consists of the mixtures of alkenes. Chemically, if we explain petroleum then it is a mixture of various types of hydrocarbons. Along with these hydrocarbons, oxygen, sulphur and nitrogen containing compounds are also present.
So, the correct answer is “Option A”.

Note: Fractional distillation is the process which is used to separate different constituents of proteins. Fractional distillation is used to separate components on the basis of difference in their boiling points. The petroleum products are complex mixtures. They are made from crude oil and then it is processed in oil refineries. The by-products of petroleum are: LPG, gasoline, Naphtha, fuel oil, paraffin wax, candle wax and lubricants.