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

Give examples for the following:
Two liquid non polar compounds.

Give examples for the following:
Two gaseous polar compounds.

Give examples for the following:
Two gaseous non polar compounds.

What do you understand by lone pair?

Explain the structure of Hydronium ion.

Explain the structure of Ammonium ion.

Explain the following:
Covalent compounds are generally gases or liquids or soft solids.

Explain the following:
Covalent compounds have low melting and boiling point.

Explain the following:
Non-polar covalent compounds are insoluble in water.

Explain the following:
Polar covalent compounds are good conductors of electricity.

Choose the correct answer from the options given below
Condition favorable for formation of a covalent bond is

Choose the correct answer from the options given below 
Which one is not example of polar covalent compound?

(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
The type of bonding in X will be

(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
X is likely to have a :

(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
In the liquid state, X will

Acids dissolve in water to produce positively charged ions. Draw the structure of these positive ions.

Explain why Carbon tetrachloride does not dissolve in water.

Name a neutral covalent molecule which contains one lone pair of electrons.

In the formation of electrovalent compounds, electrons are transferred from one element to another. How are electrons involved in the formation of a covalent compound?