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

Name the catalyst used in the process.

Sulphuric acid can be used to prepare a number of gases in the laboratory. Write balanced equation for the reaction from which the folllowing gas are obtained, using dilute sulphuric acid as one of the reactant : Hydrogen

Sulphuric acid can be used to prepare a number of gases in the laboratory. Write balanced equation for the reaction from which the folllowing gas are obtained, using dilute sulphuric acid as one of the reactant : Carbon dioxide

Sulphuric acid can be used to prepare a number of gases in the laboratory. Write balanced equation for the reaction from which the folllowing gas are obtained, using dilute sulphuric acid as one of the reactant : Sulphur dioxide

What would you see, when a crystal of CuSO₄.5H₂O is placed in concentrated sulphuric acid? Give reason to explain your observation.

What do you observe when barium chloride solution is added to dilute sulphuric acid?

Write balanced equation for the reaction between iron and dilute sulphuric acid.

Write balanced equation for the reaction of dilute sulphuric acid with the following:
Copper carbonate

Write balanced equation for the reaction of dilute sulphuric acid with the following: 
Lead nitrate solution

Write balanced equation for the reaction of dilute sulphuric acid with the following:
Zinc hydroxide

In this question, you required to supply the word (or words) that will make the sentence correct. Rewrite the copper statement.
Copper sulphate crystals are dehydrate by sulphuric acid.

What do you see when concentrated sulphuric acid is added to copper sulphate-5-water ( You are not required to say what is happing, nor is it necessary to name the products.) 

Copy and complete the following table.
Column 3 has the names of gases to be prepared using the substance you enter in column 1, along with dilute or concentrated sulphuric acid, as indicated in column 2.

Write the equation for the laboratory preparation of :
(i) Sodium sulphate using dilute sulphuric acid.
(ii) Lead sulphate using dilute sulphuric acid.

Which concentrated acid oxidizes sulphur directly to sulphuric acid ? Write the equation for the same. What is the name of the process by which sulphuric acid is manufactured ? Name the catalyst used in the process.

Complete the following sentence, choosing the correct word from the given options.
"Concentrated sulphuric acid is used in the laboratory preparation of nitric acid and hydrochloric acid because it is ____________ in comparison to these two acids."

Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Iron (II) sulphate from iron.

Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Copper sulphate from copper.

Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Lead sulphate from lead nitrate.

Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Sodium Sulphate from sodium carbonate.

1. Name the catalyst which helps in the conversion of sulphur dioxide to sulphur trioxide in step C.
2. In the contact process for the manufacture of sulphuric acid, sulphur trioxide is not converted to sulphuric acid by reacting it with water. Instead a two-step procedure is used. Write the equations for the two steps involved in D.
3. What type of substance will liberate sulphur dioxide from sodium sulphite in step E?
4. Write the equation for the reaction by which sulphur dioxide is converted to sodium sulphite in step F.