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प्रश्न
State the contributions of John Dalton – towards the development of Chemistry.
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उत्तर
John Dalton
1. He compiled his theory in 1803 known as Dalton’s atomic theory.
2. The main postulates of Dalton’s atomic theory are that “Matter consists of particles called atoms, which are indivisible and cannot be created or destroyed.”
3. The theory was later contradicted in certain aspects by the Modem atomic theory
संबंधित प्रश्न
How is chemistry helpful in improving the health of human beings?
What is the contribution of chemistry in following field?
Medicines
Write True or False against the following statement.
Antibiotics are used as preservatives:
Explain in brief the importance of Chemistry in agriculture.
Differentiate between the terms food preservatives and food processing with appropriate examples.
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Give reasons for the following
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Give reasons for the following
Ordinary soap is wasted in hard water.
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Give reasons for the following
All medicines must be taken under proper doctors' supervision and in the correct dose.
