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What is the approximate ratio of roasted ore,coke and limestone respectively in the charge to be added into the blast furnace for the extraction of iron?

For the following statements,mark $T$ for true and $F$ for false statement.
Statement $1$: $SnO_2 +$ wolframite,in this $SnO_2$ is magnetic while wolframite is non-magnetic in nature.
Statement $2$: Argentite ore is concentrated by froth floatation method.
Statement $3$: Copper and lead ores are reduced by self-reduction method.
Statement $4$: In metallurgy of $Fe$,$CO$ is used as a reducing agent at low temperature.

Match List-$I$ (substances) with List-$II$ (processes) employed in the manufacture of the substances and select the correct option.
List-$I$ (Substances) List-$II$ (Processes)
$A$. Sulphuric acid $i$. Haber's process
$B$. Steel $ii$. Bessemer's process
$C$. Sodium hydroxide $iii$. Leblanc process
$D$. Ammonia $iv$. Contact process

List-$I$ contains different compounds formed during the extraction of metal $(M)$ in List-$II$. Match the compounds in List-$I$ with the corresponding metal and process in List-$II$.
List-$I$ List-$II$
$(P). [M(CN)_2]^-$ $(1). Ni$ (during refining of metal)
$(Q). [M(CO)_4]$ $(2). Ti$ (during refining of metal)
$(R). MI_4$ $(3). Pb$ (during roasting of ore)
$(S). MO$ $(4). Ag$ (during leaching of ore)

How is cement clinker obtained?

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