In all other groups , number between first and second letters is twice the sum of positions of first and last letters in the alphabet.

In all other groups, last number is double the number of letters between the first and second letter.

Except '288' all other numbers are squares of natural numbers.

Except 'cat' all other animals are used for carriage of goods.

All the rest are spices while 'Groundnut' is a dry fruit.

Only 'Nylon' is synthetic in nature.

'Engine' is made by man, rest all are natural.

All the numbers except '52' are divisible by 12.

All the rest are the items of stationary.

Except 'Sodium' all other are radioactive.