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

Explain the following:
polar covalent compounds electricity.

For each compound mentioned above give the formulae of ions formed in aqueous solution.

State the type of bonding in the following molecule.
Water

State the type of bonding in the following molecule.
Hydroxyl ion

State the type of bonding in the following molecule.

Methane

State the type of bonding in the following molecule.

Ammonium ion

Define a coordinate bond.

Complete the following:

When the nuclei of two different reacting atoms are of ______ mass, then a bond so formed is called ______ covalent bond. (equal, unequal, polar, non-polar)

Complete the following:

In case of non-polar covalent bond, the covalent bond is formed in the ______ of atoms and shared electrons are ______ distributed. (corner, middle, equally, unequally)

Draw an electron dot diagram for the formation of the following. State the type of bonding present in them.

Hydroxyl ion

Give two example in following case:

Solid covalent compounds

Give two example in following case:
Gaseous polar compounds

Give two example in following case:
Gaseous non polar compounds

Give two example in following case:
Liquid non polar compounds

Is PbO₂ a base or not? Comment.

Write the balanced equation for the preparation of the following salt in the laboratory:

A soluble sulphate by the action of an acid on an insoluble base.

Write the balanced equation for the preparation of the following salt in the laboratory:

An insoluble salt by the action of an acid on another salt.

Write the balanced equation for the preparation of the following salt in the laboratory:

An insoluble base by the action of a soluble base on a soluble salt.

Write the balanced equation for the preparation of the following salt in the laboratory:

A soluble sulphate by the action of an acid on a metal.

Name two colourless gases, which when mixed, produce a white solid.