Which of the following has highest melting point?

Options

A. Pig iron
B. Cast iron
C. Steel
D. Wrought iron

Answer

D

Explanation

As the impurity decrease, melting point increases.
`{:("Pig iron","Cast iron","Wrought iron","Steel",""),("Most impure ","after pig iron","Most pure","Iron-98-99.5 %",""),("93 % iron","93-95 % iron","Iron - 99.5-99. 8%","",""),("M.P :" 1200^@C,~~ 1200^@C,above 1500^@C,"Between",),("","","(Highest)",1300-1400^@C,):}`