Consider the following statements. 1. Carbon black is obtained when methane is heated in absence of air. 2. Kerosene is a mixture of alphatic hydrocarbons. 3. Most of hydrocarbons from petroleum are obtained by fractional distillation. Which of the statements given above are correct? A. 1 and 2 B. 1 and 3 C. 2 and 3 D. 1, 2 and 3

The correct answer is: B. 1 and 3

Statement 1 is correct. Carbon black is obtained when methane is heated in absence of air. This process is called incomplete combustion.

Statement 2 is incorrect. Kerosene is a mixture of aliphatic and aromatic hydrocarbons.

Statement 3 is correct. Most of hydrocarbons from petroleum are obtained by fractional distillation.

Fractional distillation is a process used to separate the components of a liquid mixture based on their boiling points. The mixture is heated and the vapor is condensed into a liquid. The liquid is then cooled and the components are separated.

The components of petroleum are separated into different fractions based on their boiling points. The fractions are then used to make different products, such as gasoline, diesel fuel, and kerosene.