Question:
The correct statement regarding the given Ellingham diagram is:
The correct statement regarding the given Ellingham diagram is:
Updated On: Jul 20, 2024
- At $800\, ^{\circ}C$, $Cu$ can be used for the extraction of $Zn$ from $ZnO$
- At $500\, ^{\circ}C$ coke can be used for the extraction of $Zn$ from $ZnO$
- Coke cannot be used for the extraction of $Cu$ from ${Ca_2O}$.
- At $1400\, ^{\circ}C$ $Al$ can be used for the extraction of $Zn$ from $ZnO$
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
According to the given diagram Al can reduce ZnO.
${3ZnO + 2Al -> 3Zn + Al2O3 }$
${3ZnO + 2Al -> 3Zn + Al2O3 }$
Was this answer helpful?
0
0
Top Questions on Concentration of ores
- Which of the following are carbonate ores?
I. Siderite
II. Kaolinite
III. Calamine
IV. Sphalerite- AP EAPCET - 2025
- Chemistry
- Concentration of ores
- Identify the sulphide ore among the following:
- TS POLYCET - 2025
- Chemistry
- Concentration of ores
- Which of the following methods is used for the concentration of ore?
- TS POLYCET - 2025
- Chemistry
- Concentration of ores
- Pyrolusite ore is:
- BCECE Nursing - 2024
- Chemistry
- Concentration of ores
- A → P is a zero-order reaction. At 298 K, the rate constant of the reaction is \( 1 \times 10^{-3} \) mol L\(^{-1}\) s\(^{-1}\). Initial concentration of 'A' is 0.1 mol L\(^{-1}\). What is the concentration of 'A' after 10 sec?
- AP EAMCET - 2024
- Chemistry
- Concentration of ores
View More Questions
Questions Asked in JEE Main exam
- In a microscope of tube length $10\,\text{cm}$ two convex lenses are arranged with focal lengths $2\,\text{cm}$ and $5\,\text{cm}$. Total magnification obtained with this system for normal adjustment is $(5)^k$. The value of $k$ is ___.
- JEE Main - 2026
- Optical Instruments
Which one of the following graphs accurately represents the plot of partial pressure of CS₂ vs its mole fraction in a mixture of acetone and CS₂ at constant temperature?
- JEE Main - 2026
- Organic Chemistry
- Let \( ABC \) be an equilateral triangle with orthocenter at the origin and the side \( BC \) lying on the line \( x+2\sqrt{2}\,y=4 \). If the coordinates of the vertex \( A \) are \( (\alpha,\beta) \), then the greatest integer less than or equal to \( |\alpha+\sqrt{2}\beta| \) is:
- JEE Main - 2026
- Coordinate Geometry
- Three charges $+2q$, $+3q$ and $-4q$ are situated at $(0,-3a)$, $(2a,0)$ and $(-2a,0)$ respectively in the $x$-$y$ plane. The resultant dipole moment about origin is ___.
- JEE Main - 2026
- Electromagnetic waves
Let \( \alpha = \dfrac{-1 + i\sqrt{3}}{2} \) and \( \beta = \dfrac{-1 - i\sqrt{3}}{2} \), where \( i = \sqrt{-1} \). If
\[ (7 - 7\alpha + 9\beta)^{20} + (9 + 7\alpha - 7\beta)^{20} + (-7 + 9\alpha + 7\beta)^{20} + (14 + 7\alpha + 7\beta)^{20} = m^{10}, \] then the value of \( m \) is ___________.- JEE Main - 2026
- Complex Numbers and Quadratic Equations
View More Questions
Concepts Used:
Concentration of Ore
The concentration of ore, also known as ore enrichment, is the process of removing gangue particles from ore in order to enhance the percentage of metal in the ore. The difference in physical or chemical properties of the ore and the impurities determines the procedures used to remove impurities from the ores.
Methods of Concentration of Ore:
- Hand-picking - It was the traditional system of directly concentrating ore with the hands. With the use of a hammer, the gangue or adhering solid matrix is removed from the ore in this procedure. The separation and identification of gangue are based on colour or lump form differences.
- Hydraulic Washing - On passing the ore via an upward stream of water, the lighter gangue particles are separated from the heavier metal ore. This is a gravity separation method.This process is used to enrich ores that are heavier than the gangue particles that are present in them. A stream of water is run through crushed and finely powdered ore in this procedure. Water washes away the lighter gangue particles, leaving the larger ore particles behind.
- Froth Floatation Process - The purpose of this process is to extract gangue from sulfide ores. The ore is pulverized and mixed with water to form a suspension. Collectors and Froth Stabilizers are added to this. Collectors like pine oils, fatty acids, etc. boost the metal part of the ore’s non-wettability, allowing it to form a froth.