ICSE ICSE Class 6 - CISCE Question Bank Solutions for Chemistry

Give one example of a polyatomic molecule.

Name the process by which the components of the following mixture can be separated.

Chalk powder and iron filings

Name the process by which the components of the following mixture can be separated.

Chaff and grain

Give reasons

Magnet is used to separate a mixture of iron and sulphur.

Give one word name for the following

The technique used to separate the light particles from heavy particles using the flow of wind

State the principle involved in separation of solid-solid mixtures by magnetic separation

State what is meant by ‘magnetic separation of two mixtures’. Explain how iron particles can be separated from sulphur particles.

Draw a neat labelled diagram for the separation of the following mixture.

A magnetic particle from a non-magnetic particle

State the technique involved in separating the following:

Iron and chalk powder

State the technique involved in separating the following:

Iron filings from pieces of copper wire

Give reasons for the following:

Sulphur and charcoal powder cannot be separated by magnetic separation.

State four ways by which water can be conserved.

State some of the ways in which you as an individual can conserve water.

Explain the meaning of the following term:

Rainwater harvesting

Explain the meaning of the following term:

Drip irrigation in agriculture

Explain the meaning of the following term:

Conservation of water

State what is meant by the term ‘conservation of water’.
State a few water-saving methods, which may be used in the home to conserve water.

Give a reason why :
Conservation of water is essential in spite of the fact that three fourth of the earth’s surface is covered by water.

Give a reason why :
Drip irrigation helps in the conservation of water.

State whether the following statement is true or false. If false, write the correct statement.

Chemical pollutants include a metallic salt solution of mercury and lead.