English Medium इयत्ता ९ - CBSE Question Bank Solutions for Science

State two physical properties on the basis of which metals can be distinguished from non-metals.

State any two properties for believing that aluminium is a metal.

State any two properties for believing that aluminium is a metal.

Give reason why copper metal is used for making electric wires.

Give reason why copper metal is used for making electric wires.

Give reason why graphite is used for making elecrode in a dry cell.

Give reason why graphite is used for making elecrode in a dry cell.

How would you confirm that a colourless liquid given to your is pure water ?

How would you confirm that a colourless liquid given to your is pure water ?

Define a compound. Give two points of evidence to show that sodium chloride is a compound.

Define a compound. Give two points of evidence to show that sodium chloride is a compound.

State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it differs from it.

State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it differs from it.

You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound ?

You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound ?

Name a non-metal :

1. which is lustrous
2. which is required for combustion
3. whose one of the allotrophic forms is a  good conductor of electricity. Name the allotrope.
4. other than carbon which shows allotropy
5. which is known to form the largest number of compounds

Name a non-metal :

1. which is lustrous
2. which is required for combustion
3. whose one of the allotrophic forms is a  good conductor of electricity. Name the allotrope.
4. other than carbon which shows allotropy
5. which is known to form the largest number of compounds

Name a metal which can be easily cut with a knife.

Name a metal which can be easily cut with a knife.

Name a metal which forms amalgams.