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प्रश्न
Write True or False against the following statement.
Chemistry plays an important role in the national economy:
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
What is ‘Philosopher’s stone’?
What is the contribution of chemistry in the following field?
National Defence
Write True or False against the following statement.
Enzymes secreted by our body are chemicals:
State the functions of the following basic glass apparatus:
Beaker
State the functions of the following basic glass apparatus:
Round bottom flask
State why a round bottom flask is preferred to a flat bottom flask – during the preparation of gases in the laboratory.
State the method used for collecting the following gas:
Sulphur dioxide – a gas highly soluble in water and heavier than air
Select the correct name from the choices given below for the following case.
A Medicine to treat pain, fever & inflammation.
Select the correct name from the choices given below for the following case.
A water-soluble cleaning agent – not inactivated by hard water.
A philosopher’s stone is not exactly a stone.
