Chemistry and Metallurgy in India
CBSE · Class 11 · Knowledge Traditions and Practices of India
Quick revision notes for Chemistry and Metallurgy in India — CBSE Class 11 Knowledge Traditions and Practices of India. Key concepts, formulas, and definitions for last-minute revision.
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Key Topics to Revise
From Alchemy to Modern Chemistry
- Modern chemistry evolved from Alchemy and Iatrochemistry during 1300–1600 C.E.
- Alchemy began in ancient Egypt because of belief in life after death and the need for mummification.
- Alexander the Great’s conquest of Egypt led Greek thinkers to study Egyptian science.
Chemistry in Ancient Indian Traditions
- Ancient India had its own chemical traditions known as Rasāyana Śāstra, Rasatantra, Rasakriyā, and Rasavidyā.
- Chemistry was used in metallurgy, medicine, cosmetics, glass, dyes, and inks.
- The Vedas mention the extraction and processing of metals such as gold, silver, copper, tin, lead, iron, and their alloys.
Harappan Chemical Techniques and Materials
- The Indus Valley Civilisation used gypsum cement in construction, with lime, sand, and traces of CaCO3.
- Harappan people made pottery on a large scale, which involved mixing, moulding, and firing materials.
- Glazed faience was used for ornaments.
Glass Making, Paints, Dyes, Perfumes, and Cosmetics
- By the sixth century B.C.E., glass vessels were manufactured for domestic and utilitarian purposes.
- The antiquity of glass can be traced to 800–500 B.C.E.
- Glass beads at Harappa date to around 1700 B.C.E., about 200 years before Egyptian glass.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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