Cement was introduced by a mason:
Correct answer: C. Joseph Aspdin
- A. D-H Whore
- B. Humphry Davy
- C. Joseph Aspdin
- D. F. Wöhler
Explanation
Calcium phosphate is a naturally occurring mineral that is not directly usable as a phosphatic fertilizer. While it contains phosphorus, the phosphorus in calcium phosphate is not readily available to plants because it is insoluble in water. It needs to undergo chemical reactions or microbial processes to become accessible to plants.
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About Industrial Chemistry
Industrial chemistry applies chemical reactions and material properties to the manufacture of adhesives, dyes and polymers. Coverage includes addition and condensation polymerisation, thermoplastics and thermosetting polymers, the structural basis of colour in dyes, and how adhesive composition enables bonding between surfaces.
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Which of the following cannot be used as phosphatic fertilizer:
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