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Home » Fsc Part 2 » Chemistry » Notes » Chemistry Chapter 15 | 2nd Year
Chemistry

Chemistry Chapter 15 | 2nd Year

April 4, 2013Updated:September 24, 2022No Comments2 Mins Read
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 Chapter 15 Notes | Chemistry 2nd Year

“Common Chemicals Industries In Pakistan”

  1. Agriculture has been one of the oldest indsutry known to man. Since 5000 B.C Chinese have been using chapter-15-chemistry-2nd-year-notesanimals manure in their fields.
  2. Fertilizer is the natural or artificial substance containing the chemical elements that improve growth and productiveness of plants.
  3. Natural fertilizers are materials derived from plants and animals whereas artificial fertizers consist of manufactured material like urea, super phophate and ammonium nitrate, etc
  4. Syntehtic fertilizers are maily used fot making up the immediate deficiency of essential nutrient elements needed in relatively large amount.
  5. The nutrients required in a very small amount for growth of plants are called micro-nutrients and the nutriets which are required in a very large amount are called macto nutrients.
  6. Urea and ammonium nitrate are the majot nitrogeneoue fertilizers whereas super phosphat and triple phosphate are important phosphatic fertilizers/
  7. Cement is a very impotant building material which was first introduces in 1824 by an English mason joseph Aspdin.
  8. Cement is the material obtained by burning an intimate mixture of cacarious and argillaceous materials at suffeciently high temrature to produce clinckers wihich are subsequently griound to a fine powder. Wet process is generally used inproduction of cement.

See Also: Chemistry 2nd Year Paper Scheme 2021

See Also: FSc 2nd Year Smart Syllabus


See Also: 2nd Year Chemistry Guess Papers 2021

2nd year notes Chemistry 2nd year notes Chemistry Notes free online notes Online Course
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