The correct answer is B. Ni : Mond's process, Cu : Electrolysis, Zr : van-Arkel process, Ga : Zone refining.

Here's why:

1. Nickel (Ni) is refined using Mond's process. In this process, nickel is heated in the presence of carbon monoxide to form nickel tetracarbonyl, which is a volatile complex. This complex is then decomposed at a higher temperature to give pure nickel.

2. Copper (Cu) is refined using electrolysis. In this process, impure copper is used as the anode and pure copper as the cathode. On passing electric current, copper from the anode is dissolved and deposited on the cathode. Impurities are left behind at the anode.

3. Zirconium (Zr) is refined using the van Arkel process. In this process, zirconium is converted into a volatile compound (zirconium tetraiodide) by reaction with iodine. This compound is then decomposed to give pure zirconium.

4. Gallium (Ga) is refined using zone refining. This process is based on the principle that impurities are more soluble in the melt than in the solid state of the metal. A circular mobile heater is fixed at one end of the rod of impure metal. As the heater moves, the pure metal crystallizes out and the impurities pass on into the adjacent melt.

Question

The correct answer is B. Ni : Mond's process, Cu : Electrolysis, Zr : van-Arkel process, Ga : Zone refining.

Here's why:

1. Nickel (Ni) is refined using Mond's process. In this process, nickel is heated in the presence of carbon monoxide to form nickel tetracarbonyl, which is a volatile complex. This complex is then decomposed at a higher temperature to give pure nickel.

2. Copper (Cu) is refined using electrolysis. In this process, impure copper is used as the anode and pure copper as the cathode. On passing electric current, copper from the anode is dissolved and deposited on the cathode. Impurities are left behind at the anode.

3. Zirconium (Zr) is refined using the van Arkel process. In this process, zirconium is converted into a volatile compound (zirconium tetraiodide) by reaction with iodine. This compound is then decomposed to give pure zirconium.

4. Gallium (Ga) is refined using zone refining. This process is based on the principle that impurities are more soluble in the melt than in the solid state of the metal. A circular mobile heater is fixed at one end of the rod of impure metal. As the heater moves, the pure metal crystallizes out and the impurities pass on into the adjacent melt.

Knowee AI · Accepted Answer

The correct answer is B. Ni : Mond's process, Cu : Electrolysis, Zr : van-Arkel process, Ga : Zone refining.

Here's why:

1. Nickel (Ni) is refined using Mond's process. In this process, nickel is heated in the presence of carbon monoxide to form nickel tetracarbonyl, which is a volatile complex. This complex is then decomposed at a higher temperature to give pure nickel.

2. Copper (Cu) is refined using electrolysis. In this process, impure copper is used as the anode and pure copper as the cathode. On passing electric current, copper from the anode is dissolved and deposited on the cathode. Impurities are left behind at the anode.

3. Zirconium (Zr) is refined using the van Arkel process. In this process, zirconium is converted into a volatile compound (zirconium tetraiodide) by reaction with iodine. This compound is then decomposed to give pure zirconium.

4. Gallium (Ga) is refined using zone refining. This process is based on the principle that impurities are more soluble in the melt than in the solid state of the metal. A circular mobile heater is fixed at one end of the rod of impure metal. As the heater moves, the pure metal crystallizes out and the impurities pass on into the adjacent melt.

Question

Solution

Similar Questions

Upgrade your grade with Knowee