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Q: Acid-resistant cement and gypsum are examples of _________ materials.
  • A. rigorous binding
  • B. air binding
  • C. glued binding
  • D. sewn binding
Correct Answer: Option B - The binding material are classified into three categories–air binding material, autoclave binding material and hydraulic binding material. • Acid resistant cement and gypsum are examples of air binding materials.
B. The binding material are classified into three categories–air binding material, autoclave binding material and hydraulic binding material. • Acid resistant cement and gypsum are examples of air binding materials.

Explanations:

The binding material are classified into three categories–air binding material, autoclave binding material and hydraulic binding material. • Acid resistant cement and gypsum are examples of air binding materials.