Find the odd-one out ?

Choose the one which is different or odd form the following.

In the following question, select the one which is different from the other three response.

‘Link’ is related to ‘Chain’ in the same way as ‘Bead’ is related to ‘____’.

Select the related letters/word/number from the given alternative.
PEDAL : BICYCLE

Choose the odd word from the following words.

Select the set that is different among the given four options.

Find the odd one out.