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

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.

Write balanced equation for potassium hydrogen carbonate and dilute sulphuric acid.

A, B, C and D summarize the properties of sulphuric acid depending on whether it is dilute or concentrated. Choose the property (A, B, C or D), depending on which is relevant to each of the preparations (i) to (ii).
A. Dilute acid (typical acid properties)
B. Non-volatile acid
C. Oxidizing agent
D. Dehydrating agent

(i) Preparation of hydrogen chloride.
(ii) Preparation of ethane from ethanol
(iii) Preparation of copper sulphate from copper oxide.

Name the gas evolved in following case: 
The gas produced by the action of concentrated sulphuric acid on sodium chloride.

Write the equation of the following reaction:

Sulphur is heated with concentrated sulphuric acid.

Write the equation of the following reaction :
Concentrated sulphuric acid is poured over sugar

State your observation for the following case :
Moist blue litmus is introduced into a gas jar of sulphur dioxide.

State your observation for the following case :
Dry red rose petals are placed in the jar of sulphur dioxide.

State your observation for the following case:

Paper soaked in potassium permanganate solution is introduced into a gas jar of sulphur dioxide.

What would you observe in the following case:

Sugar crystals are added to a hard glass test tube containing concentrated sulphuric acid.

What property of sulphuric acid is shown by the reaction of concentrated sulphuric acid when heated with potassium nitrate?

In the given equation identify the role played by concentrated sulphuric acid S + 2H₂SO₄→ 3SO₂ + 2H₂O

State one appropriate observation of the following:
Concentrated sulphuric acid is added dropwise to a crystal of hydrated copper sulphate.

State one appropriate observation of the following:

Dehydration of concentrated sulphuric acid with sugar crystals.

Give one equation to show the following property of sulphuric acid:

Dehydrating property