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

Give main difference between drying agent and dehydrating agent.

Choose the current answer from the options given below :
When conc. H₂SO₄ comes in contact with sugar, it becomes black due to

Choose the current answer from the options given below :
The catalyst used for the oxidation of SO₂ to SO₃ in contact process is

Give reason for the following:
Concentrated sulphuric acid is kept in airtight bottles.

Name the anion [negative ion] present in the following compound:

Compound D when warmed with dilute H₂SO₄ gives a gas which turns acidified potassium dichromate solution green.

The following statement is correct only under certain conditions. Rewrite the statement including the appropriate conditions.
Oxalic acid reacts with sulphuric acid to produce carbon monoxide and carbon dioxide.

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.