Adhesives are broadly classified based on origin into which two categories?
Correct answer: C. Natural and Synthetic
- A. Reactive and Non-reactive
- B. Bold and Liquid
- C. Natural and Synthetic
- D. Drying and Curing
Explanation
Adhesives are classified based on their origin into two main categories: Natural and Synthetic. Natural adhesives are derived from organic materials such as plants and animals, while Synthetic adhesives are man-made, typically created from petrochemicals. The option 'Natural and Synthetic' correctly identifies these two categories. Other classifications like 'Reactive and Non-reactive' and 'Drying and Curing' are based on chemical properties and setting methods, respectively, not the origin. 'Bold and Liquid' is not a recognized classification in the context of adhesives.
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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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