Question : Of the four substances mentioned in the following options, which one has the highest electrical resistivity at 20°C, as compared to the other three?
Option 1: Iron
Option 2: Mercury
Option 3: Manganese
Option 4: Chromium
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Correct Answer: Manganese
Solution : The correct answer is Manganese .
The manganese is denoted as Mn chemically. It is identified by the atomic number 25. This silvery, hard and brittle metal is commonly found in minerals with iron. This metal is in the transition state. Its coefficient of resistance at low temperatures is modest.
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