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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.

The statement that is $INCORRECT$ about Ellingham diagram is :

Mark the steel in which carbon percentage is highest.

Match List-$I$ (Substances) with List-$II$ (Processes) used for their production.
List-$I$ (Substances) List-$II$ (Processes)
$(a)$ Sulphuric acid $(i)$ Haber process
$(b)$ Steel $(ii)$ Bessemer process
$(c)$ Sodium hydroxide $(iii)$ Leblanc process
$(d)$ Ammonia $(iv)$ Contact process

Choose the correct option for $a-b-c-d$.

List-$I$ shows reactions involved in the metallurgy of $Pb$ (lead) and List-$II$ shows the names of the processes. Match List-$I$ with List-$II$ and select the correct code for your answer.
List-$I$ List-$II$
$(P) \ PbS + 2PbO \xrightarrow{\Delta} 3Pb + SO_2 \uparrow$ $(1) \ \text{Smelting}$
$(Q) \ PbS + \frac{3}{2}O_2 \xrightarrow{\Delta} PbO + SO_2 \uparrow$ $(2) \ \text{Self reduction}$
$(R) \ PbCO_3 \xrightarrow{\Delta} PbO + CO_2 \uparrow$ $(3) \ \text{Calcination}$
$(S) \ PbO + C \xrightarrow{\Delta} Pb + CO \uparrow$ $(4) \ \text{Roasting}$

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