Unit - 1.1 Chemistry and its Importance — CHEMISTRY STD 6 — Question

Define or explain the following terms: Sedimentation

State the function of
The air regulator in a Bunsen burner.

Name the following
A black non-metallic component of the mixture gunpowder.

write the correct statement:
Cheese is removed from the curdled milk by the process of decantation.

write the correct statement:
When the milk is centrifuged, the heavier cream settles at the base.

Give two examples of the following.
Metals which are soft

Give the percentage of water in the following:
Eggs

Give one word name for the following
The technique used to separate the light particles from heavy particles using the flow of wind

Classify the following into solids, liquids and gases.
Oxygen, milk, common salt, wax, stone, L.P.G, carbon- dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.

Name the main components of air.