In isolation of which one of the following metals from their ores, the use of cyanide salt is not commonly involved?
- Zinc
- Gold
- Silver
- Copper
The Correct Option is D
Solution and Explanation
The correct option is(D): Copper
In the extraction of Silver and Gold, NaCN is used to leach the metal.
For ZnS, KCN is used as depressant.
For Gold and silver ⇒ leaching [Cyanide process]
Top Questions on General Principles and Processes of Isolation of Elements
- 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
- TS EAMCET - 2025
- Chemistry
- General Principles and Processes of Isolation of Elements
- What is used for the Thermite Reaction?
- BCECE - 2025
- Chemistry
- General Principles and Processes of Isolation of Elements
- Which of the following compounds is used to cover the surface of a metallic object to prevent corrosion?
- KEAM - 2025
- Chemistry
- General Principles and Processes of Isolation of Elements
- An ore having two different metal atoms is
- Bihar Board XII - 2024
- Chemistry
- General Principles and Processes of Isolation of Elements
- Electrometallurgical process is used for the extraction of which of the following metals?
- Bihar Board XII - 2024
- Chemistry
- General Principles and Processes of Isolation of Elements
Questions Asked in JEE Main exam
Let $ A \in \mathbb{R} $ be a matrix of order 3x3 such that $$ \det(A) = -4 \quad \text{and} \quad A + I = \left[ \begin{array}{ccc} 1 & 1 & 1 \\2 & 0 & 1 \\4 & 1 & 2 \end{array} \right] $$ where $ I $ is the identity matrix of order 3. If $ \det( (A + I) \cdot \text{adj}(A + I)) $ is $ 2^m $, then $ m $ is equal to:
- JEE Main - 2025
- Determinants
- An air bubble of radius 0.1 cm lies at a depth of 20 cm below the free surface of a liquid of density 1000 kg/m\(^3\). If the pressure inside the bubble is 2100 N/m\(^2\) greater than the atmospheric pressure, then the surface tension of the liquid in SI units is (use \(g = 10 \, {m/s}^2\)).
- JEE Main - 2025
- Surface Tension
- A force of 49 N acts tangentially at the highest point of a sphere (solid of mass 20 kg) kept on a rough horizontal plane. If the sphere rolls without slipping, then the acceleration of the center of the sphere is:
- JEE Main - 2025
- Quantum Mechanics
- Let a circle C pass through the points (4, 2) and (0, 2), and its centre lie on \(3x + 2y + 2 = 0\). Then the length of the chord of the circle C, whose midpoint is (1, 2), is:
- JEE Main - 2025
- Coordinate Geometry
A square loop of sides \( a = 1 \, {m} \) is held normally in front of a point charge \( q = 1 \, {C} \). The flux of the electric field through the shaded region is \( \frac{5}{p} \times \frac{1}{\varepsilon_0} \, {Nm}^2/{C} \), where the value of \( p \) is:
- JEE Main - 2025
- Gauss's Law
Concepts Used:
General Principles and Processes of Isolation of Elements
What are Ores and Minerals?
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –
- Concentration of the ore
- Isolation of the metal from its concentrated ore
- Purification of the metal