(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Chemistry

Give a balanced equation for the following conversion:

A nitride of a trivalent metal to ammonia.

Give a balanced equation for the following conversion:

Lead oxide to lead.

Choose the correct word or phrase from the options to complete the following sentence and write balanced equation for the same.

When ammonium chloride is heated, it undergoes ______.

Choose the correct word or phrase from the options to complete the following sentence and write balanced equation for the same.

Heating ammonium chloride with sodium hydroxide produces ______.

Name an acidic gas which reacts with a basic gas liberating a neutral gas.

Name a nitride of a divalent metal which reacts with warm water liberating ammonia.

Name an amphoteric oxide reduced by the basic gas.

Name a white salt produced by an acid gas and a basic gas.

Complete the following equation.
Mg₃N₂ + 6H₂O →

Complete the following equation.

\[\ce{8NH3 + 3Cl2 ->}\]

What are the main refrigerants used and how do they cause ozone deplation?

What is the alternative of chlorofluorocarbon?

State the advantages of using ammonia as refrigerant?

Ammonia is a good refrigerant but it shows some disadvantages when used as refrigerant. State the disadvantages.

Write the equation for the action of heat on ammonium chloride.

State whether the reaction is an example of thermal decomposition or thermal dissociation.

Write the equation for the action of heat on ammonium nitrate.

State whether the reaction is an example of thermal decomposition or thermal dissociation.

Comment, sulphuric acid is referred to as King of chemicals.

Comment, sulphuric acid is referred to as oil of vitriol.

Correct the following, if required:

HNO₃ is a strong reducing agent.

Correct the following, if required:

NaNO₃ gives NO₂ and O₂ on heating.