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smuggler could not carry gold by depositing iron on the gold surface sincegold is densergold has higher reduction potential than irongold has lower reduction potential than ironNone of these

Question

smuggler could not carry gold by depositing iron on the gold surface sincegold is densergold has higher reduction potential than irongold has lower reduction potential than ironNone of these

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Solution

The statement "A smuggler could not carry gold by depositing iron on the gold surface" is likely because gold is denser than iron.

Here's the step-by-step reasoning:

  1. Density: Gold is denser than iron. This means that a certain volume of gold will weigh more than the same volume of iron. If a smuggler tries to coat gold with iron, the density of the object will be higher than expected for a pure iron object. This could raise suspicion.

  2. Reduction potential: Gold has a higher reduction potential than iron. This means that gold is less likely to lose electrons and oxidize (rust) compared to iron. If the iron coating starts to rust, it could reveal the gold underneath.

  3. Detection: Modern metal detectors and X-ray machines can often detect the presence of different metals. Even if the gold is coated with iron, it may still be detected.

So, the correct answer would be a combination of "gold is denser" and "gold has higher reduction potential than iron".

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