Easy
Which of the following statements is incorrect?
- A$H_2$ is used in the reduction of $NiO$.
- BVan Arkel method is used for Zirconium.
- CFroth flotation method is used for the concentration of Galena.
- D$SiO_2$ is used as a flux in the extraction of iron.
Explore More
Similar Questions
Which of the following statements is not correct?
$1$. Reduction of alumina to give aluminium by magnesium is thermodynamically feasible.
$2$. The point of intersection of $Al_2O_3$ and $MgO$ curves in Ellingham diagram is below $1665 \ K$.
$3$. Use of magnesium as reducing agent in metallurgy of aluminium is economical.
$4$. Ellingham diagram represents the graphical plot of Gibbs energy vs temperature for the formation of the oxides of common metals and reducing agents.
$1$. Reduction of alumina to give aluminium by magnesium is thermodynamically feasible.
$2$. The point of intersection of $Al_2O_3$ and $MgO$ curves in Ellingham diagram is below $1665 \ K$.
$3$. Use of magnesium as reducing agent in metallurgy of aluminium is economical.
$4$. Ellingham diagram represents the graphical plot of Gibbs energy vs temperature for the formation of the oxides of common metals and reducing agents.
What is the slag formed in the extraction of iron?
In the extraction of copper,when molten copper is cooled slowly,blister copper is obtained due to the evolution of which of the following gases?
Medium
View SolutionThe purpose of smelting of an ore is
Difficult
View SolutionThe purpose of smelting an ore is to.......
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo