Doctor : Nurse : : ? : Follower

Waves are related to air in the same way ripples are related to........

Brain is related to Cranium in the same way as Pearl is related to...........?

Choose the correct alternative for the word that belongs to the same group.
Jam : Jelly : Pickles

Choose the correct alternative for the given relation.
Revolution : Change

Choose the correct alternative for the word that belongs to the same group.
Which of the following is the same as $Sial$,$Sima$,$Mantle$?