How is magnesium chloride prepared ? Write its important uses .

How is hydrogen chloride prepared? Write its uses.

How is sodium sulphate prepared? Write its uses.

Write important uses of helium.

How is acetyl chloride prepared? Discuss its properties.

How is benzene diazonium chloride prepared ? What are its properties?

Write the important uses of aniline

How is gypsum prepared ? Write its uses .

How is benzene diazonium chloride prepared ? Give equation.

What is resonance? Write its importance.

How magnesium carbonate is prepared by different methods ? What happens when carbondioxide is passed through magnesium carbonate? Write any of its three important uses.