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प्रश्न
Write True or False against the following statement.
D.D.T. is an important fertiliser:
पर्याय
True
False
उत्तर
False
APPEARS IN
संबंधित प्रश्न
Give two examples of the following substance.
Fuel
Name the scientists who discovered the following:
Oxygen
Write True or False against the following statement.
Antibiotics are used as preservatives:
State the contributions of Dimitri Mendeleev
State the contributions of John Dalton – towards the development of Chemistry.
Differentiate between the terms food preservatives and food processing with appropriate examples.
Explain how medicines are a boon to mankind. State the positive & negative effects of medicines like aspirin and paracetamol.
Give reasons for the following
Aspirin is one of the most widely used medications – globally.
Food processing is an important procedure for obtaining marketable food products.
Give reasons for the following
Cosmetics may contain preservatives, as one of their ingredients.
