(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Chemistry

Define 
Seeding

What would you observe when crystals of copper (II) sulphate and iron (II) sulphate are separately heated in two test tubes?

State the term:

A substance which contains water of crystallisation.

When a compound loses its water of crystallisation on exposure to dry air.

Hot saturated solution of sodium nitrate forms crystals as it cools. Why?

On the basis of Thomson's model of an atom explain how an atom as a whole is neutral.

Which sub-atomic particle was discovered by Thomson?

Match the following:

What is a chemical formula? What is the significance of a formula?give an example to illustrate?​

Name a salt which contain of crystallization.

Name a salt which does not contain water of crystallization.

What is ‘water of crystallization’ ? Name a crystalline salt which does not contain water of crystallization.

What would you observe, when the water of crystallization of a salt Is removed by heating it.

What is meant by the term crystal?

What is meant by the term crystallization?

What is meant by the term seed crystal.

Define the term ‘water of crystallization’.

XCl₂ is the chloride of a metal X. State the formula of the sulphate and the hydroxide of the metal X.

The formula of the nitride of a metal X is XN, state the formula of :

1. its sulphate
2. its hydroxide.

Name the element in the compound and give the formula of the following compound:

Nitric acid