(English Medium) ICSE Class 10 - CISCE Important Questions

Name the gas evolved when the following mixtures are heated.

Sodium nitrite and ammonium chloride.

State one relevant observation for the following:

When crystals of copper nitrate are heated in a test tube.

 Explain the following:

Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.

Explain the following:

Concentrated nitric add appears yellow when it is left standing in a glass bottle.

Explain the following:

An all-glass apparatus is used in the laboratory preparation of nitric acid.

Write a balanced equation for the action of heat on a mixture of copper and concentrated nitric acid.

Write a balanced equation for the action of warm water on magnesium nitride.

Name the gas that is produced in the given cases :

Sulphur is oxidized by concentrated nitric acid.

Name the gas that is produced in the given case:

The action of cold and dilute nitric acid on copper

What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of nitric acid?

State one observation for the following:

Concentrated nitric acid is reacted with sulphur.

Distinguish between the following pairs of compounds using the reagent given in the bracket.
Dilute hydrochloric acid and dilute sulphuric acid. (Using lead nitrate solution) 

 Identify the substance underlined: 
The dilute acid which is an oxidizing agent. 

Write the equation for the reaction:

Aluminium nitride and Water.

Convert the following reaction into a balanced chemical equation:

Ammonia to nitric oxide using oxygen and platinum catalyst.

Differentiate between the following pair based on the criteria given:

Sulphuric acid and Nitric acid (using barium chloride solution)

Give a balanced equation for the following reaction:

Copper reacts with concentrated nitric acid.

The diagram given below is a representation of the Industrial preparation of Nitric acid by Ostwald’s process. With respect to the process answer the following questions:

1. Write the temperature and the catalyst required during the catalytic oxidation of ammonia.
2. Give balanced chemical equation for the reaction occurring duringthe conversion of nitrogen dioxide to nitric acid.

Write a balanced chemical equation for the following: 

Action of concentrated sulphuric acid on Sulphur.

State one relevant observation for given reactions:

Addition of ethyl alcohol to acetic acid in the presence of concentrated Sulphuric acid