Why is dioxygen a gas but sulphur a soiid?

Answer the following in one or two sentences Why is hydrogen gas not libereated when metals (except Mn and Mg) are treated with HNO_3 ?

What is the color of a solution on dipping a piece of zinc in dilute sulphuric acid?

Why is it necessary to remove sulphur from petroleum products?

Why is the deviation of real gas from ideal gas behavior observed at high pressure and low temperature ?

The oxidation state of sulphur in sulphoxylic acids is

Give scientific reasons While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.

Calculate the pH of decimolar solution sulphuric add.

Give action of hot and dilute sulphuric acid on (1) Ethoxy ethane

Aqueous solutions of hydrogen suphide and sulphur dioxide when mixed together , yeild _________.