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

The molecule which contains a triple covalent bond is ______.

Explain the bonding in methane molecule using electron dot structure.

An element L consists of molecules.
What type of bonding is present in the particles that make up L?

An element L consists of molecules.
Why L is heated with iron metal, it forms a compound FeL. What chemical term would you use to describe the change undergone by L?

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

Answer the following questions based on the table above:

What type of bond is formed between Y and Z.

The particles present in strong electrolytes are

Fill in the blank from the choice given in bracket.
The compound that does not have a lone pair of electrons is ___________. (Water, Ammonia, carbon tetrachloride)

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

State the type of bonding in the following molecule.
Water

Draw an electron dot diagram to show the formation of the following compound.
Methane

Draw an electron dot diagram to show the formation of the following compound.
Magnesium chloride [ H=1, C=6, Mg=12, Cl=17].

Name a solution that will separate the component of the following mixture: Zn(OH)₂ from Pb(OH)₂

Name a solution that will separate the component of the following mixture: CaO from PbO

Name a solution that will separate the component of the following mixture: CuO from ZnO

Choose the correct answer from the options given below :
Color of ferrous ion is

Choose the correct answer from the options given below :
Which one is colourless anion?

Choose the correct answer from the options given below :
Sodium zincate (Na₂ZnO₂) is

You are given a mixture of precipitated copper hydroxide and zinc hydroxide. Name a solvent which will dissolve:
Only copper hydroxide

You are given a mixture of precipitated copper hydroxide and zinc hydroxide. Name a solvent which will dissolve:
Only zinc hydroxide

You are given a mixture of precipitated copper hydroxide and zinc hydroxide. Name a solvent which will dissolve:
Both copper hydroxide and zinc hydroxide