Ozonised Oxygen can be obtained from $H_{2}OH\_2O$ by the action of

Halogen which can be prepared from caliche is

Which one of the following elements can have both positive and negative oxidation state?

HI can be prepared by all the following methods, except

Which among the following is paramagnetic?

Which of the following pairs will give chlorine gas most quickly, upon reaction?

Which one of the following oxyacids of chlorine is the least oxidizing in nature?

Which of the following bonds is the strongest?

In the clathrates of xenon with water, the nature of bonding between xenon and water molecule is

The last member of the family of inert gases is