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प्रश्न
Name the scientists who discovered the following:
Oxygen
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उत्तर
A scientist who discovered Oxygen: Joseph Priestly
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संबंधित प्रश्न
Give two examples of the following substance.
Food preservatives
Name the scientists who discovered the following:
Atoms
Choose the correct alternative from the choices given below for the following statement:
The chemicals prescribed by a doctor in the treatment of infectious diseases are called
State the contributions of Dimitri Mendeleev
State the contributions of Antoine Lavoisier
Differentiate between the terms food preservatives and food processing with appropriate examples.
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
Polyester is added to natural fiber cotton, to give terylene.
Give reasons for the following
All medicines must be taken under proper doctors' supervision and in the correct dose.
