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प्रश्न
Write True or False against the following statement.
D.D.T. is an important fertiliser:
विकल्प
True
False
उत्तर
False
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संबंधित प्रश्न
Give two examples of the following substance.
Fuel
Give two examples of the following substance.
Chemical war weapons
What is the contribution of chemistry in following field?
Cosmetics
Name the scientists who discovered the following:
Atoms
Name the scientists who discovered the following:
Oxygen
_____________ help to increase the production of food.
Fill in the blank:
Inert gases were discovered by ___________
Differentiate between natural fibres & synthetic fibres.
Explain how medicines are a boon to mankind. State the positive & negative effects of medicines like aspirin and paracetamol.
Food processing is an important procedure for obtaining marketable food products.
