Q67
Determine the correctness or otherwise of the following Assertion (a) and Reason (r). Assertion (a): Peak aging time for an Al-4 wt.% Cu alloy is indicated by a maximum in the hardness. Reason (r): The maximum volume fraction of the θ precipitates is formed at the peak aging time.
A.
a is true but r is false
AnswerB.
a is false but r is true
C.
both a and r are true, and r is the reason for
D.
both a and r are true, but r is not the reason for a
Answer: Option A
Solution
Answer: Option A
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