MEDIUM
9th CBSE
IMPORTANT
Earn 100

Give some examples of Tyndall effect observed in your surroundings?

Important Questions on Is Matter Around Us Pure?

MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Short Answer Questions>Q 28
Can we separate alcohol dissolved in water by using a separating funnel? If yes, then describe the procedure. If not, explain.
EASY
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Short Answer Questions>Q 29
On heating, calcium carbonate gets converted into calcium oxide and carbon dioxide. Is this a physical or a chemical change?
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Short Answer Questions>Q 29
On heating, calcium carbonate gets converted into calcium oxide and carbon dioxide. Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Short Answer Questions>Q 30
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non malleable and are coloured.
Name a lustrous non-metal.
EASY
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Short Answer Questions>Q 30
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, nonmalleable and are coloured.
Name a non-metal which exists as a liquid at room temperature.
EASY
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Short Answer Questions>Q 30
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, nonmalleable and are coloured.
The allotropic form of a non-metal is a good conductor of electricity. Name the allotrope.
EASY
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Short Answer Questions>Q 30
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which is known to form the largest number of compounds from the following. (Carbon/Sulphur/Phosphorous)
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 2 - Is Matter Around Us Pure?>Short Answer Questions>Q 30
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal other than carbon which shows allotropy.