- 1(current)
Q. No.Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?
1. Distillation
2. Zone refining
3. Electrolysis
4. Chromatography
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct statement among the following is:
| 1. | Blister copper has a blistered appearance due to the evolution of CO2. |
| 2. | Vapour phase refining is carried out for nickel by the Van Arkel method. |
| 3. | Pig iron can be moulded into a variety of shapes. |
| 4. | Wrought iron is impure iron with 4 % carbon. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the elements in Column I with methods of purification in Column II.
| Column I | Column II | ||
| (a) | Boron | (i) | Van Arkel method |
| (b) | Tin | (ii) | Mond's process |
| (c) | Zirconium | (iii) | Liquation |
| (d) | Nickel | (iv) | Zone refining |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iv) | (iii) | (i) | (ii) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (ii) | (i) | (iv) | (iii) |
| 4. | (iii) | (iv) | (i) | (ii) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch items of Column I with the items of Column II and assign the correct code.
| Column I | Column II |
| A) Cyanide process | 1) Ultra pure Ge |
| B) Froth floatation Process |
2) Dressing of ZnS |
| C) Electrolytic | 3) Extraction of Al Reduction |
| D) Zone refining | 4) Extracting of Au |
| A | B | C | D | |
| 1. | 2 | 3 | 1 | 4 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 3 | 4 | 2 | 1 |
| 4. | 4 | 2 | 3 | 1 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA pair of metals that can be purified by van Arkel method is:
1. Zr and Ti
2. Ag and Au
3. Ni and Fe
4. Ga and In
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe method of zone refining of metals is based on the principle of:
| 1. | Greater mobility of the pure metal than that of the impurity |
| 2. | Higher melting point of the impurity than that of the pure metal |
| 3. | Greater noble character of the solid metal than that of the impurity |
| 4. | Greater solubility of the impurity in the molten state than in the solid |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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