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

Explain the following:

Lead carbonate does not react with dilute HCl.

Choosing only substances from the list given in the box below, write equations for the reactions which you would use in the laboratory to obtain: Sodium sulphate

(a) What are the terms defined by the following?

(i) A salt containing a metal ion surrounded by other ions or molecules.

(ii) A base which is soluble in water.

(b) Making use only of substances chosen from those given below:

Dilute sulphuric acidSodium Carbonate

Zinc   Sodium sulphite

Lead  Calcium carbonate

Give equations for the reactions by which you could obtain :

(i) Hydrogen

(ii) Sulphur dioxide

(iii) Carbon dioxide

(iv) Zinc carbonate (two steps required)

Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.

What do you understand by amphoteric oxide?

Give the balanced equations for the reaction with two different amphoteric oxides with a caustic alkali.

Name the products formed when the reaction with two different amphoteric oxides with a caustic alkali.

Write a balanced equation for the following conversion:

\[\ce{ZnSO4 ->[A]Zn(OH)2->[B]Na2ZnO2}\]

Write a balanced equation for the following conversion:

\[\ce{CuSO4 ->[A]Cu(OH)2 ->[B] [Cu(NH3)4]SO4}\]

What is the value of molar volume of a gas at S.T.P?

Explain the term:

Molar volume

Define or explain the term:

Relative atomic mass

Define the term:

Relative molecular mass

Define the term:

Gram atom

Define the term:

Mole

Find the number of molecules in 73 g of HCl.

Find the number of molecules in 1.8 g of H₂O.

Find the number of moles in 10 g of CaCO₃.

Find the number of molecules in 3.2 g of SO₂.

Calculate the number of particles in 0.1 mole of any substance.