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

Give two examples of suitable alternatives of CFCs which can be used as refrigerant and are non-ozone deflecting?

What are chlorofluorocarbons, why they become popular as substitute of ammonia as refrigerant?

Name the gas evolved when dilute hydrochloric acid is added to: Calcium carbonate

Name the gas evolved when dilute hydrochloric acid is added to:  Sodium sulphite

Name the gas evolved when dilute hydrochloric acid is added to: Lead (II) sulphide 

How is gas collected in the gas jar?

Name the gas evolved when dilute hydrochloric acid is added to: Magnesium bicarbonate

Name the gas evolved when dilute hydrochloric acid is added to: Potassium bisulphite

Give a balanced equation when dilute hydrochloric acid is added to : Calcium carbonate

Give a balanced equation when dilute hydrochloric acid is added to : Sodium sulphite

Give a balanced equation when dilute hydrochloric acid is added to : Lead (II) sulphide

Give a balanced equation when dilute hydrochloric acid is added to : Magnesium bicarbonate

Give a balanced equation when dilute hydrochloric acid is added to : Potassium bisulphite

Give balanced reactions for the following conversion:

Ammonia to nitrogen using copper oxide.

Choose the correct answer from the options given below :

The other products obtained along with water where NH₃ is passed over heated CuO are

Choose the correct answer from the options given below :

Liquid ammonia is used in refrigeration because of its

Give two reasons to show that the solution of ammonia in water contains hydroxylions.