Questions

The study of trees is called Dendrology.

Sukumar Sen, a civil servant who served as the first Chief Election Commissioner of India from 21 March 1950 to 19 December 1958.

'M' is used as a unit of molarity and stands for mole per litre i.e, number of moles of solute per liter of solution.

Charak was a native of Kashmir.

Bogibeel bridge ( 4940 m ) is a combined road and rail bridge over the Brahmaputra river in the north eastern Indian state of Assam between Dhemaji district and Dibrugarh district.

A pure solid and a pure liquid are definitely a single phase because they are so united, or homogeneous. This leads to a homogeneous mixture also being a single phase.

Hence, the option that cannot be considered a single phase is A. a heterogeneous mixture.