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Alloys
📆 October 21, 2024
Total Questions: 42
41.
Stainless steel is an alloy of—
[63rd B.P.S.C. (Pre) 2017]
(a) Iron and Nickel
(b) Iron and Chromium
(c) Iron and Zinc
(d) Copper and Chromium
(e) None of the above/More than one of the above
Correct Answer:
(b) Iron and Chromium
Solution:
Stainless steel (stain-free iron) is an alloy whose constituent elements generally are approximately as follows:
Iron: 89.4%
Chromium: 10.0%
Manganese: 0.35%
Carbon: 0.25%
Iron and Chromium:
This is the most fundamental and defining combination for stainless steel.
42.
How much carbon does steel contain?
[M.P.P.C.S. (Pre) 2000]
(a) 0.1–2%
(b) 7–10%
(c) 10–50%
(d) Zero
Correct Answer:
(a) 0.1–2%
Solution:
The amount of Carbon contained in Steel lies between 0.1% to 2%.
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