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

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?

Write balanced equations for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.

Write balanced equations for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions. 

Write balanced equations for a Metal that Evolves a Gas Which Burns with a Pop Sound When Boiled with Alkali Solutions.

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

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

The following is a list of methods for the preparation of salts.

A – direct combination of two elements

B – reaction of a dilute acid with a metal.

C – reaction of a dilute acid with an insoluble base.

D – titration of a dilute acid with a solution of soluble base.

E – reaction of two solutions of salts to form a precipitate.

Choose from the above list A to E, the best method of preparing the following salt by giving a suitable equation in the following case:

Lead chloride.

For each of the salt: A, B, C and D, suggest a suitable method of its preparation.

B is an insoluble salt.

From the formula listed below, choose one, in the following case, corresponding to the salt having the given description: 

AgCl, CuCO₃, CuSO₄.5H₂O, KNO₃, NaCl, NaHSO₄, Pb(NO₃)₂, ZnCO₃, ZnSO₄.7H₂O.

An insoluble chloride.

Making use only of substances chosen from those given below:

(Dilute sulphuric acid, sodium carbonate, Zinc, sodium sulphite, Lead, calcium carbonate)

Give the equation for the reaction by which you could obtain hydrogen.

Making use only of substances chosen from those given below:

(Dilute sulphuric acid, sodium carbonate, Zinc, sodium sulphite, Lead, calcium carbonate)

Give the equation for the reaction by which you could obtain sulphur dioxide.

Making use only of substances chosen from those given below:

(Dilute sulphuric acid, sodium carbonate, Zinc, sodium sulphite, Lead, calcium carbonate)

Give the equation for the reaction by which you could obtain carbon dioxide.

Making use only of substances chosen from those given below:

(Dilute sulphuric acid, sodium carbonate, Zinc, sodium sulphite, Lead, calcium carbonate)

Give the equation for the reaction by which you could obtain zinc carbonate (two steps required).

A black coloured solid which on reaction with dilute sulphuric acid forms a blue coloured solution is ______.

State your observation:

Zinc granule is added to copper sulphate solution.

Write balanced equations for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.

Choose the correct answer from the options given below:

Which of the following is a common characteristic of a covalent compound?

1) high melting point

2) consists of molecules

3) always soluble in water

4) Conducts electricity when it is in the molten state

Calculate the percentage of water of crystallization in CuSO₄.5H₂O

(H = 1, O = 16, S = 32, Cu = 64)

State the type of bonding in the following molecule.

Water

Identify the salts P and Q from the observations given below:

On performing the flame test salt P produces a lilac coloured flame and its solution gives a white precipitate with silver nitrate solution, which is soluble in Ammonium hydroxide solution.