GATE XE · 2025 · XE-C
Question 65: Processing of Materials
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Question 65
XE-CNAT2 marksNeeds review
Corrosion of pure iron takes place in an acidic electrolyte by forming Fe
ions at ambient condition. The corrosion current density is measured to be
A cm
. The corrosion rate (in mm per year) of iron is (rounded off to one decimal place) ____________Given: Atomic weight of iron = 55.85
Density of iron = 7.86 g cm
Consider 365 days in a year
1 Farad = 96500 Coulomb mol
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2025XE-C
GATE XE 2025 · Paper 1
Engineering Sciences · Original paper archive
- Section
- Section XE-C
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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