(English Medium) ICSE Class 10 - CISCE Important Questions

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.

Hydrogen chloride gas is prepared in the laboratory by the action of concentrated sulphuric acid on sodium chloride.

Give a balanced chemical equation for the above reaction.

Hydrogen chloride gas is prepared in the laboratory by the action of concentrated sulphuric acid on sodium chloride.

State the method of collection of the gas formed above.

Hydrogen chloride gas is prepared in the laboratory by the action of concentrated sulphuric acid on sodium chloride.

What is the property of sulphuric acid that makes it a suitable reagent for the reaction?

A student takes Cu, Al, Fe and Zn strips, separately in four test tubes labeled as I, II, III and IV respectively. He adds 10 ml of freshly prepared ferrous sulphate solution to each test tube and observes the colour of the metal residue in each case.

He would observe a black residue in the test tubes:

What property of Sulphuric acid is exhibited in the following case?

In the preparation of HCI gas when it reacts with Sodium chloride.

What property of Sulphuric acid is exhibited in the following case?

When concentrated Sulphuric acid reacts with Copper to produce Sulphur dioxide gas.

Identify the substance underlined, in the following case

An organic compound containing – COOH functional group

Draw the structural formula for Diethyl ether

The equation for the reaction when compound A is bubbled through bromine dissolved in carbon tetrachloride is as follows:

1) Draw the structure of A.

2) State your observation during this reaction.

Give the structural formula for 1, 2-dichloroethane

The organic compound which undergoes substitution reaction is :

(A) `C_2H_2`

(B) `C_2H_4`

(C) `C_10H_18`

(D) `C_2H_6`

Complete the following table which relates to the homologous series of hydrocarbons.

Define catenation.

 Ethane, methane, ethene, ethyne. (In the increasing order of the molecular weight) 

What is homologous series?

The unsaturated hydrocarbons undergo ______.

Identify the gas evolved when sodium propionate is heated with sodalime

Carbon to carbon double bond is found in ______.