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

Write balanced equation for the following reaction:
Zinc and sodium hydroxide solution

Write balanced equation for the following reaction:
Sulphur dioxide and sodium hydroxide solution 
(Give the equation for the formation of the normal salt)

State what do you observe when:
Lead nitrate and sodium chloride are mixed.

Write the observation, and balanced equation for the following reaction:
Moist starch iodide paper is placed at the mouth of a test tube containing chlorine gas.

Name the following :  
Acid present in the stomach of mammals.

Name the following:
Acid used to extract glue from bones.

Name the following:  A greenish yellow gas.

Calcium oxide and phosphorous pentoxide are very good drying agents but they are not used to dry HCI gas. Give reasons for each.

Name the gas evolved when dilute hydrochloric acid is added to: Zinc Metal

Give a balanced equation when dilute hydrochloric acid is added to :  Zinc Metal

Choose the correct answer from the options given below:
Which of the following statement is not correct ?

What is the function of:
(i) finely divided iron
(ii) Molybdenum in the above process

Write the equation for the action of heat on:
(i) Ammonium chloride
(ii) Ammonium nitrate
State whether each reaction is an example of thermal dissociation or thermal decomposition.

 Name two fertilizers manufactured from ammonia.

Explain the following:

Liquid NH3 has no action on litmus, while liquor ammonia has an effect.

Explain the following:

Ammonia cannot be collected over water.

Explain the following:

 Aqueous ammonia conducts electricity.

Explain the following:

 Ammonia is present in sewage water.