What is produced when ethanol reacts with sodium metal?

Draw the electron dot structure of ethane,$C_{2}H_{6}$.

What is the solution of ethanol containing $5\%$ water called?

Give the formula and name of the alkane which contains four carbon atoms in each molecule.

Which of the following polymer substances is inert towards environmental processes?

An element is a main constituent of paper,diamond and clothes etc. It forms covalent bonds with itself and other elements.
$(a)$ Identify the element.
$(b)$ Write the electron dot structure of its oxide.
$(c)$ Draw the electron dot structure of methane and ethane.