Impurity defect in an alloy (steel, stainless steel, brass)

This type of question, asked 3 times: 20 Apr 2025 S1, 22 Apr 2025 S2, 20 Apr 2026 S2. All 3 questions below, oldest first.

Try each one first, then open its answer.

Question 1
20 Apr 2025 S1
76 $Identify the type of defect from following in stainless steel.$
Tap an option to check your answer.
Question 2
22 Apr 2025 S2
66 $Identify the type of defect in brass alloy.$
Tap an option to check your answer.
Question 3
20 Apr 2026 S2
21 $Which of the following defects is observed in steel?$
Tap an option to check your answer.