Assertion :Statement-I : Blocks of magnesium are often stapped to steel hulls of ocean going ships. Reason: Statement-II : Magnesium causes cathodic protection of iron.

Statement-I is true, Statement-II is true; Statement-II is correct explanation for Statement-I.

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Statement-I is true, Statement-II is true; Statement-II is NOT a correct explanation for statement-I

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Statement-I is true, Statement-II is false

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Statement-I is false, Statement-II is true

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Solution

The correct option is A Statement-I is true, Statement-II is true; Statement-II is correct explanation for Statement-I.
Blocks of magnesium are often stapped to steel hulls of ocean going ships as magnesium causes cathodic protection of iron. Magnesium is more reactive than iron.

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