Mention the four types of oxyacids of sulphur and give examples.

Basicity of any oxyacid of sulphur is

Mention various types of ·crystalline solids. Give examples.

Mention the oxyacids of phosphorus and the oxidation states of phosphorus in them.

The type of bonds present in sulphuric anhydride are

Write the names and formulae of any two oxyacids of sulphur. Indicate the oxidation state of sulphur in them.

How many types of fuels are there? Give examples.

Mention different types of reation based on their speeds . Give examples .