Which of the following formulas represents a saturated cyclic compound?

Which of the following is a free radical substitution reaction?

At $25,^oC$,Ethylene glycol is a:

The product of a reaction at $773 \ K$ temperature is $C_7H_{16} + C_5H_{10}$. Identify the reactant and the type of reaction.

$n$-pentane and isopentane can be distinguished by

If a mixture of iodomethane $(CH_3I)$ and iodoethane $(C_2H_5I)$ is treated with sodium metal in the presence of dry ether,it forms: