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

Give a chemical test to distinguish between the following gases. 

SO₂ and Cl₂ 

Give a chemical test to distinguish between the following gases. 

NH₃ and SO₂

Distinguish by heating the following in dry test tubs.

Zinc carbonate, Copper carbonate and lead carbonate.

What do you observe when dilute sulphuric acid is added to the following:

Sodium Sulphide

Distinguish by heating the following in dry test tubs.

Zinc nitrate and copper nitrate.

Distinguish by heating the following in dry test tubs.

Copper Sulphate and copper carbonate

Distinguish by heating the following in dry test tubs.

Ammonium Chloride and iodine.

What do you observe when CO₂ is passed through lime water first and then a little in excess.

Write your observation and a balanced equation in the case of the following substances being heated.

Ammonium dichromate.

Write your observation and a balanced equation in the case of the following substances being heated.

Copper nitrate. 

Write your observation and a balanced equation in the case of the following substances being heated.

Copper carbonate.

Write your observation and a balanced equation in the case of the following substances being heated.

Zinc carbonate.

Write your observation and a balanced equation in the case of the following substances being heated.

Ammonium chloride 

Distinguish by dilute sulphuric acid.

Sodium Sulphite and sodium carbonate?

Distinguish by dilute sulphuric acid.

Copper and magnesium?

Distinguish by dilute sulphuric acid.

Sodium sulphide and sodium sulphite?

What volume will a gas occupy at 740 mm pressure which at 1480 nun occupies 500 cc? [Temperature being constant]

The volume of a given mass of a gas at 27°C is 100 cc. To what temperature should it be heated at the same pressure so that it will occupy a volume of 150 cc?

A fixed mass of a gas has a volume of 750 cc at—23°C and 800 mm pressure. Calculate the pressure for which its volume will be 720 cc. The temperature being - 3°C.

Calculate the following:

The temp, at which 500 cc. of a gas ‘X’ at temp. 293K occupies half it’s original volume [pressure constant].