Electric cookers have coating of _ that protects then against fire.
Correct answer: B. Magnesium oxide
- A. Heavy lead
- B. Magnesium oxide
- C. Zine oxide
- D. Sodium sulphate
Explanation
The electric cookers have coating that protects them against fire. The coating is made up of MgO. It has high melting point and does not catch fire and hence protects the cooker against fire.
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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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