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AP EAMCET · Chemistry · General Principles and Processes of Isolation of Metals

Match the items of List-I with those of List-II and choose the correct option given below.
\(\begin{array}{|c|c|}
\hline \text { List-I } & \text { List-II } \\
\hline \text { A. Calcination } & \text { 1. Galena } \\
\hline \text { B. Roasting } & \text { 2. Magnetite } \\
\hline \text { C. Magnetic separation } & \text { 3. Pyrometallurgy } \\
\hline \text { D. Carbon reduction of metal oxide } & \text { 4. Malachite } \\
\hline
\end{array}\)

  1. A \(\begin{array}{llll} \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} \\ 4 & 1 & 3 & 2 \end{array}\)
  2. B \(\begin{array}{cccc} \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} \\ 4 & 1 & 2 & 3 \end{array}\)
  3. C \(\begin{array}{llll} \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} \\ 2 & 4 & 3 & 2 \end{array}\)
  4. D \(\begin{array}{cccc} \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} \\ 3 & 2 & 1 & 4 \end{array}\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\begin{array}{cccc} \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} \\ 4 & 1 & 2 & 3 \end{array}\)

Step-by-step Solution

Detailed explanation

(A) Calcination For hydrated carbonate or bicarbonate ores \(\Rightarrow(4)\) malachite, \(\mathrm{CuCO}_3 \cdot \mathrm{Cu}(\mathrm{OH})_2\) (B) Roasting For sulphide ores \(\Rightarrow\) (1) galena, \(\mathrm{PbS}\) (C) Magnetic separation For magnetic ore or gangue…