- 1(current)
Q. No.Which of the following reaction corresponds to Mond’s process ?
1. \(\mathrm{ZrI}_4 \stackrel{1800 \mathrm{~K}}{\longrightarrow} \mathrm{Zr}+2 \mathrm{I}_2\)
2. \(\mathrm{Ni}(\mathrm{CO})_4 \stackrel{450-470 \mathrm{~K}}{\longrightarrow} \mathrm{Ni}+4 \mathrm{CO} \)
3. \(2\left[A u(C N)_2\right]^{-}(a q)+Z n(s) \rightarrow 2 A u(s)+\left[\mathrm{Zn}(\mathrm{CN})_4\right]^{2-}(a q)\)
4. \(2 \mathrm{Al}_2 \mathrm{O}_3+3 \mathrm{C} \rightarrow 4 \mathrm{Al}+3 \mathrm{CO}_2\)
1. \(\mathrm{ZrI}_4 \stackrel{1800 \mathrm{~K}}{\longrightarrow} \mathrm{Zr}+2 \mathrm{I}_2\)
2. \(\mathrm{Ni}(\mathrm{CO})_4 \stackrel{450-470 \mathrm{~K}}{\longrightarrow} \mathrm{Ni}+4 \mathrm{CO} \)
3. \(2\left[A u(C N)_2\right]^{-}(a q)+Z n(s) \rightarrow 2 A u(s)+\left[\mathrm{Zn}(\mathrm{CN})_4\right]^{2-}(a q)\)
4. \(2 \mathrm{Al}_2 \mathrm{O}_3+3 \mathrm{C} \rightarrow 4 \mathrm{Al}+3 \mathrm{CO}_2\)
Subtopic: Refining Process |
Please attempt this question first.
Hints
Please attempt this question first.
| Statement I: | In the electro-refining of blister copper precious metals are obtained in anode mud. |
| Statement II: | Pure copper is obtained by the above method |
| 1. | Both Statement I and Statement II are true. |
| 2. | Both Statement I and Statement II are false. |
| 3. | Statement I is True while Statement II is false. |
| 4. | Statement I is False while Statement II is true. |
Subtopic: Refining Process |
76%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
In the liquation process used for tin(Sn), the metal:
| 1 . | is reacted to the acid. |
| 2. | is dissolved in water. |
| 3. | is brought to molten form which is made to flow on a slope. |
| 4. | is fused with NaOH. |
Subtopic: Refining Process |
87%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
The method used for the purification of Indium is-
1. Van Arkel method
2. Liquation
3. Zone refining
4. Vapour phase refining
Subtopic: Refining Process |
71%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Among statements (I) – (IV), the correct ones are-
| (I) | Limestone is decomposed to CaO during the extraction of iron from its oxides |
| (II) | In the extraction of silver, silver is extracted as an anionic complex |
| (III) | Nickel is purified by Mond's process |
| (IV) | Zr and Ti are purified by the Van Arkel method |
1. (III) and (IV) only
2. (I), (III), and (IV) only
3. (II), (III), and (IV) only
4. (I), (II), (III), and (IV)
Subtopic: Metallurgy of individual elements | Refining Process |
64%
Level 2: 60%+
Hints
Match the refining methods (Column I) with metals (Column II).
| Column I (Refining methods) |
COlumn II (Metals) |
| (I) Liquation | (a) Zr |
| (II) Zone Refining | (b) Ni |
| (III) Mond Process | (c) Sn |
| (IV) Van Arkel Method | (d) Ga |
1. (I)-(c) ; (II)-(a) ; (III)-(b) ; (IV)-(d)
2. (I)-(c) ; (II)-(d) ; (III)-(b) ; (IV)-(a)
3. (I)-(b) ; (II)-(d) ; (III)-(a) ; (IV)-(c)
4. (I)-(b) ; (II)-(c) ; (III)-(d) ; (IV)-(a)
Subtopic: Refining Process |
88%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
© 2026 GoodEd Technologies Pvt. Ltd.