Metallurgy PYQs - Last 5 Years

The ore of which metal is concentrated by leaching?

Composition of siderite ore is

In the extraction of iron using blast furnace to remove the impurity $(X)$, chemical $(Y)$ is added to the ore. $X$ and $Y$ are respectively

Observe the following statements
Statement I : The choice of reducing agent for the reduction of an oxide ore can be predicted by using Ellingham diagram, a plot of $\Delta G^{\ominus}$ vs $T$.
Statement II : According to Ellingham diagram,...

Identify the reaction, which is not related to extraction of copper

Metal $X$ obtained from sphalarite ore can be purified by which of the following method?

"Observe the following reaction. This reaction represents

\(4 \mathrm{HCl}+\mathrm{O}_2 \xrightarrow[723 \mathrm{~K}]{\mathrm{CuCl}_2} 2 \mathrm{Cl}_2+2 \mathrm{H}_2 \mathrm{O}\)"

A low boiling point metal contains high boiling point metal as impurity. The correct refining method is

The major components of cement are

Copper matte is mixture of

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Kaolinite is a silicate mineral of metal ' $X$ ' and calamine is a carbonate mineral of metal ' $Y^{\prime}, X$ and $Y$ respectively are

Among the following the calcination process is

The ore which is purified by leaching process is

The metal which is refined by Mond process is $(X)$, by van Arkel process is $(Y)$ and by zone refining is $(Z), X, Y$ and Z respectively are

Ellingham diagram is the plot of $X$ vs $Y$, what are $X$ and $Y$ ?

$$ \begin{aligned} 4 \mathrm{Ag}(s)+8 \mathrm{CN}^{-}(a q) & +2 \mathrm{H}_2 \mathrm{O}(a q)+\mathrm{O}_2(g) \longrightarrow 4\left[\mathrm{Ag}(\mathrm{CN})_2\right]^{-}(a q)+4 \mathrm{OH}^{-}(a q) \end{aligned} $$
The above reaction repr...

Sphalerite, siderite and malachite are the ores of metals $X, Y$ and $Z$. The atomic numbers of them are respectively

\(\text { Match the following. }\)$$ \begin{array}{llll} \hline & \begin{array}{c} \text { List-I } \\ \text { (Refining method) } \end{array} & & \begin{array}{c} \text { List-II } \\ \text { (Metals to be refined) } \end{array} \\ \hlin...