Medium
In the electrolysis of alumina $(Al_2O_3)$,cryolite $(Na_3AlF_6)$ is added to:
- AIncrease the melting point of alumina
- BIncrease the electrical conductivity
- CMinimise the anodic effect
- DRemove impurities from alumina
Explore More
Similar Questions
Statement $(A)$ $Mg$ can reduce $Al_2O_3$ above $1350^{\circ} C$.
Statement $(B)$ $Al$ can reduce $MgO$ below $1350^{\circ} C$.
The correct answer is
Statement $(B)$ $Al$ can reduce $MgO$ below $1350^{\circ} C$.
The correct answer is
Which technique is used in the manufacture of aluminium from bauxite?
Easy
View SolutionThermite is a mixture of
Easy
View SolutionExplain the extraction of: $(i)$ Copper from Copper$(I)$ oxide,$(ii)$ Zinc from zinc oxide.
Medium
View SolutionBlister copper is extracted from copper pyrites. After removal of slag $FeSiO_3$,blister copper is obtained by
Vedclass 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