The angle strain in cyclopropane is:

Identify the product $C$ in the following reaction:
$CH_{3}CH_{2}COOH$ $\xrightarrow{NaOH} A$ $\xrightarrow{NaOH, CaO, \Delta} B$ $\xrightarrow{HNO_{3}, \Delta} C$

Isomers of hexane,based on their branching,can be divided into three distinct classes as shown in the figure. The correct order of their boiling point is

Which one of the following reactions gives the product with a lesser number of carbon atoms than the starting material?

Which of the following has the lowest octane number?

How many isomeric vicinal-dihalides are possible for the compound having molecular formula $C_3H_6Cl_2$?