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

 Complete the following equations :
 C + cons. H₂SO₄   

 Complete the following equations : 
3 Cu + dil. HNO3 

 Match the alloys given in column I to the uses given in column II : 

State differences between the properties of ionic compounds and covalent compounds.

In term of electron transfer, define Oxidation

In term of electron transfer, define

Reduction

Explain the following briefly:
Helium does not form He₂  molecule

What type of bond is formed between two atoms, when the electronegative difference between them is High ?

What type of bond is formed between two atoms, when the electronegative difference between them is low ?

What type of bond is formed between two atoms, when the electronegative difference between them is zero?

Separate the following compounds into three categories - ionic, polar and covalent compounds; N₂, NH₄Cl, NH₃, NO, NH₄NO₃, NCl₃.

Fill in the blanks.
The electrovalent bond or ionic bond is called as _____ bond

Fill in the blank.
___________ single covalent bonds are formed between the carbon and chlorine atoms.

Element X is a metal with a valency 2. Element Y is a non metal with a valency 3.
(a) Write equations to show how X and Y form ions.
(b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound.

Match the column A with Column B.

Among the following compounds identify the compound that has all three bonds (ionic, covalent and coordinate bond).

A Compound 'X' consists of only molecules. Hence 'X' will have

Element X is a metal with a valency 2; Y is a non-metal with a valency 3.
(a) Write an equation to show how Y forms as ion
(b) If Y is a diatomic gas, write an equation for the direct combination of X and Y to form a compound.

The following table shows the electronic configuration of the elements W, X, Y, Z:

Answer the following questions based on the table above:

What is the formula of the compound formed between X and Z.

The following table shows the electronic configuration of the elements W, X, Y, Z:

Answer the following question based on the table above:
What is the formula of the compound formed between W and X.