ICSE ICSE Class 7 - CISCE Question Bank Solutions for Chemistry

State two important uses of following metal: 

Uses of zinc  

State two important uses of following metal:

Uses of aluminium

State two important uses of following metal 

Uses of lead     

State two important uses of following metal 

Uses of magnesium  

State two important uses of following metal

Uses of mercury  

A metal highly resistant to rusting.

A mixture of oxygen and carbon dioxide used for artificial respiration.

What do you observe when Magnesium is heated and then tested with moist blue and red litmus – paper?

What is rust ?

State at least two ways of prevent rusting.

State two differences between:

Rusting and burning.

Fill in the blanks :

Oxides of sulphur and nitrogen combine with rain water to form ___________ and _________ which cause ____________.

The process by which oxidation of food in our body takes place is

Fill in the blank by choosing the correct word from the given list.

List: oxygen, carbonic, suIphur dioxide gas, precipitation, helium

____________ gas can cause acid rain.

Write ‘True’ or ‘False’ in front of following statement.

Nitrogen is a gaseous non-metal essential for respiration.

State and explain two ways by which air gets polluted in nature.

What happens when potassium nitrate is heated ?

What happens when Sodium burns in oxygen ? Also give the balanced chemical equation for the reaction.

What happens when Iron burns in oxygen ? Also give the balanced chemical equation for the reaction.

Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric

To prevent rusting, the underside of the ships is coated with __________________.