Metallurgy PYQs - Last 10 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

Match the following .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th...

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...

Which one of the following statements is true about the froth flotation method?

Which element does not exist in elemental state in the earth's crust?

The solubilities of the impurities in the melt and solid states is not same. This principle is applied during the extraction of boron. This method is known as

The method, which is based on the principle that "different components of a mixture are differently adsorbed on an adsorbent" is called

In the following reactions, identify $P, Q$ and $R$, respectively
I. $3 \mathrm{Fe}_2 \mathrm{O}_3+\mathrm{CO} \longrightarrow 2 P+\mathrm{CO}_2 \uparrow$
II. $\mathrm{Fe}_3 \mathrm{O}_4+4 \mathrm{CO} \longrightarrow 3 Q+4 \mathrm{CO}_2 \up...

Which one of the following ores does not contain iron?

\(\text { Match the following. }\)
$$ \begin{array}{llll} \hline & \text { Ores } & & \text { Composition } \\ \hline \text { A. } & \text { Calamine } & \text { (i) } & \mathrm{CuFeS}_2 \\ \hline \text { B. } & \text { Chalcopyrite } & \...