Carbon compounds :

(a) are good conductors of electricity.

(b) are bad conductors of electricity.

(c) have strong forces of attraction between their molecules.

(d) have weak forces of attraction between their molecules.

The correct statements are:

options

1. (a) and (b)
2. (b) and (c)
3. (b) and (d)
4. (a) and (c)

(b) and (d)

Reason — Most carbon compounds such as methane, ethanol, glucose and other organic substances are covalent in nature.

Because of covalent bonding, these compounds do not have free electrons or ions available to carry electric current. Hence, they are bad conductors of electricity.

Also, in covalent compounds, the forces of attraction between molecules are weak, which is why many carbon compounds exist as liquids or gases and have relatively low melting and boiling points compared to ionic compounds.

Therefore, the correct statements are:

(b) Carbon compounds are bad conductors of electricity.

(d) Carbon compounds have weak forces of attraction between their molecules.