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

Name: Gas with rotten egg smell. 

Complete the following table and write your observations.

Name: A brown gas 

Name: A greenish-yellow gas.

Name: Two nitrates that do not produce nitrogen dioxide on heating.

What is observed in performing the following :

State the original colour of the following substance and colour of residue obtained after heating.

Ammonium dichromate

State the original colour of the following substance and colour of residue obtained after heating.

Copper carbonate

State the original colour of the following substance and colour of residue obtained after heating.

Lead nitrate

State the original colour of the following substance and colour of residue obtained after heating.

Zinc carbonate

What do you observe when HCI is passed through a silver nitrate solution.

What do you observe when H₂S is passed through a lead nitrate solution.

What do you observe when Cl₂ is passed through potassium iodide (KI) solution.

What do you observe when Cobalt chloride paper is introduced in water vapour.

Give a chemical test to distinguish between the following gases. 

H₂ and CO₂

Give a chemical test to distinguish between the following gases. 

CO₂ and SO₂

Give a chemical test to distinguish between the following gases. 

H₂ and O₂

Give a chemical test to distinguish between the following gases. 

HCl and H₂S

Give a chemical test to distinguish between the following gases. 

HCl and Cl₂

Give a chemical test to distinguish between the following gases. 

NH₃ and HCl