Electrolysis — Chemistry STD 10 — Question

How many elements are there in period 2?

What is meant by periodicity of elements?

Give the equation for the preparation of the following salt from the starting material given.
Iron (III) Chloride from Iron

Which compound is normally used as a drying agent for ammonia?

When nitric acid is prepared by the action of concentrated sulphuric acid on potassium nitrate. what is the special feature of the apparatus used?

How does sulphuric acid occur in nature?

Calculate the number of atoms Which is given below :
52 amu of He

Name the following:
Drying agent used to dry hydrogen chloride.

Identify the substance underlined in each of the following case :
The particles present in a liquid such as kerosene, that is non-electrolyte.

Name the other ion formed when ammonia dissolves in water.