Which of the following non-metals are in liquid state at room temperature?

Which one of the following chemicals had been in use till now for making artificial clouds?

The study of Oncology is 

Constituents of atomic nucleus are 

____________are known as the ‘suicide bags’ of the cell.

In which of the following industries is mica as a raw material?

Which of the following phenomena does NOT occur during the formation of a rainbow?

Hemophilia is