What is a homologous series? Explain with an example.

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that

1. the food is not cooked completely
2. the fuel is not burning completely
3. the fuel is wet
4. the fuel is burning completely

How can ethanol and ethanoic acid be differentiated on the basis of their physical and chemical properties?

Explain the nature of the covalent bond using the bond formation in CH₃Cl.