Which of the following metal is used for making boats because it does not corrode by sea water?

C u

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N i

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W

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T i

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Solution

The correct option is C $T i$
Tin does not act as a sacrificial metal. Instead, it acts only as a barrier to stop air and water reaching the surface of the iron or steel. The tin layer may actually make rusting happen faster if it gets scratched, because then iron loses electrons in preference to tin.

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Which of the following metal is used for making boats because it does not corrode by sea water?

The correct option is C TiTin does not act as a sacrificial metal. Instead, it acts only as a barrier to stop air and water reaching the surface of the iron or steel. The tin layer may actually make rusting happen faster if it gets scratched, because then iron loses electrons in preference to tin.