In pig iron the concentration of C-atom is ___________________?
Correct answer: B. 2.5 - 4.5%
- A. 0.12 - 0.25%
- B. 2.5 - 4.5%
- C. 2.0 - 4.0%
- D. 0.25 - 2.5%
Explanation
Pig iron contains a relatively high amount of carbon, commonly about 2.5% to 4.5% by mass, along with other impurities. The likely alternative is 2.0% to 4.0%, but that range does not match the standard composition range used for pig iron in this classification.
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About Electronic Structure of d-Block Elements
The electronic structure of d-block elements covers the filling of the (n-1)d and ns orbitals, general electronic configurations, and the exceptions shown by chromium and copper. It explains how partially filled d orbitals produce variable oxidation states, coloured ions, magnetic behaviour and complex formation, while distinguishing transition elements from elements with completely filled d subshells.
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