Iron mixed with nickel and chromium gives:
AOrdinary brass
BYellow bronze
CSoldering wire
DStainless steel
Answer & Solution
Correct answer: D. Stainless steel
1. Pure iron is too soft to be used on its own.
2. Adding other elements makes it hard and rust free.
3. Iron with nickel and chromium gives stainless steel.
4. So the answer is stainless steel.
_Source: NCERT Science, Ch 3 'Metals and Non-metals'_
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