Q:

Which of the following is correct

A) Aluminum oxide reaches fracture point before glass B) Aluminum oxide reaches fracture point after glass
C) Aluminum oxide reaches fracture point at the same time as glass D) They do not reach a fracture point
 
Answer & Explanation Answer: A) Aluminum oxide reaches fracture point before glass

Explanation: Aluminum oxide reaches fracture point before glass. In aluminum oxide for a large amount of stress little strain is produced.

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