The formation of a pit in the surface of a...

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Question 1 of 205eccefa0bacbc34ba4d46cb7

The formation of a pit in the surface of a boiler tube is most likely to occur when __________.

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5eccefa0bacbc34ba4d46cb7

The formation of a pit in the surface of a boiler tube is most likely to occur when __________.

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🔍 Key Concepts

• pitting corrosion on boiler tubes • difference between general corrosion and localized attack • role of anodes and cathodes in electrochemical corrosion cells

💭 Think About

• Which condition creates a tiny, highly concentrated corrosion cell at a specific spot on the metal surface, instead of evenly over a wide area? • Think about how an anode behaves in a corrosion cell: does the metal at the anode get protected or attacked? • Which choice describes the electrochemical role of the tube metal itself, rather than just what’s in the water?

✅ Before You Answer

• Identify which option focuses on the electrical role of the tube metal (anode vs. cathode), not just contaminants. • Ask yourself: pitting is localized metal loss. Which option directly implies metal being sacrificed/dissolved at a point? • Eliminate answers that only describe common boiler water impurities without explaining a corrosion mechanism that creates pits.

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Question 1 of 205eccefa0bacbc34ba4d46cb7

The formation of a pit in the surface of a boiler tube is most likely to occur when __________.

Back

Question 1 of 20

5eccefa0bacbc34ba4d46cb7

The formation of a pit in the surface of a boiler tube is most likely to occur when __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• pitting corrosion on boiler tubes • difference between general corrosion and localized attack • role of anodes and cathodes in electrochemical corrosion cells

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed