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

Copy and complete the following table relating to important industrial process:

Write the observation for the following:
A paper dipped in potassium permanganate solution is put on the mouth of a test tube containing sulphur dioxide gas.

State the colour of the residue formed when nitrate of calcium is strongly heated.

State your observation of the following case:

When calcium hydroxide is heated with ammonium chloride crystals.

Compound X consists of molecules.

Choose the letter corresponding to the correct answer from the options A, B, C and D given below: 

The type of bonding in X will be ______.

Compound X consists of molecules.

Choose the letter corresponding to the correct answer from the options A, B, C and D given below:

X is likely to have a ______.

Electrons are getting added to an element Y: 

Is Y getting oxidised or reduced?

Electrons are getting added to an element Y.

1. Is Y getting oxidized or reduced?
2. Which electrode will Y migrate to during the process of electrolysis?

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

Explain why carbon tetrachloride does not dissolve in water.

Elements Q and S react together to form an ionic compound. Under normal conditions, which physical state will the compound QS exist in?

What are the term defined below?

A bond formed by share pair of electrons, each bonding atom contributing one electron to the pair.

Draw the electron dot diagram and structure of nitrogen molecule.

Draw the electron dot diagram and structure of magnesium chloride.

Draw the electron dot diagram and structure of methane.

What do you understand by dipole (polar) molecule? 

State the type of bond formed when the combining atom has zero E.N. difference. 

State the type of bond formed when the combining atom has small E.N. difference.

State the type of bond formed, and draw Lewis structure of water.

Explain the following:

Water is a polar covalent molecule.