Verbal Classification

All except Biogas are fossil fuels.

All except Unicorn are animals, while unicorn is an imaginary creature.

All except Radio waves are short wavelength radiations.

All except Leh are capitals of Indian states, while Leh is a hill station.

All except Python are venomous snakes.

All except Volt are physical quantities, while volt is a unit of measurement.

All others are general books.

All except Dysentery are diseases caused by virus, while dysentery is caused by protozoa.

All except Condensation are methods employed for separation of mixtures.

All except Mettur are famous for thermal power stations.