Which of the following is not correct?

Match the items of List-$I$ with those of List-$II$ and choose the correct option given below.

List-$I$	List-$II$
$A$. Calcination	$1$. Galena
$B$. Roasting	$2$. Magnetite
$C$. Magnetic separation	$3$. Pyrometallurgy
$D$. Carbon reduction of metal oxide	$4$. Malachite

Given below are two statements.
Statement $I$: Pig iron is obtained by heating cast iron with scrap iron.
Statement $II$: Pig iron has a relatively lower carbon content than that of cast iron.
In the light of the above statements,choose the correct answer from the options given below.

In the electrolysis of $Al_2O_3$ by the Hall-Heroult process,which of the following statements is correct?

What is known as Thomas slag?

The reaction that does $NOT$ take place in a blast furnace between $900 \ K$ to $1500 \ K$ temperature range during the extraction of iron is: