(English Medium) ICSE Class 10 - CISCE Important Questions

Write a balanced chemical equation for each of the following reactions :
Action of dilute sulphuric acid on zinc sulphide. 

 Distinguish between the following pairs of compounds using the reagent given in the bracket.
Ferrous sulphate solution and ferric sulphate solution. (Using sodium hydroxide solution) 

 Complete the following equations :
 C + cons. H₂SO₄   

The catalyst preferred in the conversion of Sulphur dioxide to Sulphur trioxide is ______.

The gas evolved when dilute sulphuric acid reacts with iron sulphide. 

An acid obtained from concentrated nitric acid on reaction with Sulphur ______.

Identify the anion present in the following compounds.

The solution of Compound L on reacting with freshly prepared ferrous sulphate solution followed by the addition of a few drops of concentrated sulphuric acid to the reactants along the sides of a test tube forms a brown ring at the junction of the two liquids.

State the observation for the following, when:

Concentrated sulphuric acid is added to carbon.

Write a balanced equation for the following conversion:

Lead sulphate from lead nitrate and sulphuric acid.

Complete the table given below:

A, B and C are the chemical properties of sulphuric acid:

A. Oxidizing agent

B. Dehydrating agent

C. Non-volatile acid

Match the following equations 1 to 3 to the above chemical properties of sulphuric acid.

1. \[\ce{KNO3 + H2SO4 -> KHSO4 + HNO3}\]

2. \[\ce{C12H22O11 -> 12C + 11H2O}\]

3. \[\ce{S + 2H2SO4 -> 2H2O + 3SO2}\]

The salt is formed when concentrated sulphuric acid reacts with KNO₃ above 200°C.

The property exhibited by concentrated sulphuric acid when it is used to prepare hydrogen chloride gas from potassium chloride is ______.

Convert the following reaction into a balanced chemical equation:

Sodium hydroxide to sodium sulphate using sulphuric acid.

The compound that will produce sulphur dioxide gas when reacted with dilute HCl.

The solution of this compound produces dirty green precipitate with NaOH.

Differentiate between the following pair based on the criteria given in the bracket:

Cane sugar and hydrated copper sulphate [using concentrated H₂SO₄]

Rewrite the following statement by adding the correct word, as shown in the example:

Sulphuric acid acts as a dehydrating agent.

Arrange the following as per the instruction given in the bracket:

Sulphuric acid, Phosphoric acid, Acetic acid (increasing order of number of replaceable H atoms per molecule).

Identify the following:

The element having electronic configuration 2, 8, 6.