Choose the word which is different from the rest.

All except Chalk are obtained from crops.

All except Potassium are metals used in semiconductor devices.

All except Oil are products obtained from milk.

All except Ayurveda are names of holy scriptures, the four Vedas. Ayurveda is a branch of medicine.

All except Eagle are flightless birds.

Swan is the only water bird in the group.

All except Sharp are related to dimension.

Orange is the only citrus fruit in the group.

All except Hammer are sharp-edged and have a cutting action.

All except Mathura are cities situated on the banks of Ganga river.