Odd Man Out

In all other words except Microbe, ‘Micro’ has been added as a prefix.

In all other groups, the second and fourth letters are each four steps ahead of the first and third letters respectively, while second and third letters are consecutive.

All except Ellora are famous for temples, while Ellora is famous for caves.

Except Tibia, all others are part of the brain.

All the rest are in the ratio of 8:9.

In all other pairs, the first, third, fourth and sixth letters of the first element form the second, first, fifth and fourth letters of the second element respectively, while the second and fifth letters of the first element move one step forward each to give the third and sixth letters of the second elements respectively.

Kite, Crow and Sparrow are names of the Birds.

In all other groups, one letter occurs twice.

All others denote state of happiness.

All other are different modes of travel.