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Question

The percentage of carbon is the least in :

A
White cast iron
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B
Grey cast iron
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C
Wrought iron
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D
Steel
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Solution

The correct option is D Steel
1: wrought iron carbon content 0.05-0.25%
2 : white and grey iron is the type of cast iron which contain 2.14-6.67% carbon.
3: steel contain 0.008-2.14% carbon So D. Steel has least Carbon %

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