Difficult
In the context of the Hall-Heroult process for the extraction of $Al$,which of the following statements is false?
- A$Al^{3+}$ is reduced at the cathode to form $Al$
- B$Na_3AlF_6$ serves as the electrolyte
- C$CO$ and $CO_2$ are produced in this process
- D$Al_2O_3$ is mixed with $CaF_2$ which lowers the melting point of the mixture and brings conductivity
Explore More
Similar Questions
$Ni$ anode is used in the electrolytic extraction of
Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R).$
Assertion $(A):$ Aluminium is extracted from bauxite by the electrolysis of a molten mixture of $Al_2O_3$ with cryolite.
Reason $(R):$ The oxidation state of $Al$ in cryolite is $+3$.
In the light of the above statements,choose the most appropriate answer from the options given below:
Assertion $(A):$ Aluminium is extracted from bauxite by the electrolysis of a molten mixture of $Al_2O_3$ with cryolite.
Reason $(R):$ The oxidation state of $Al$ in cryolite is $+3$.
In the light of the above statements,choose the most appropriate answer from the options given below:
The choice of a reducing agent in a particular case depends on thermodynamic factors. How far do you agree with this statement? Support your opinion with two examples.
Medium
View SolutionThermite is a mixture of $X$ parts of ferric oxide and $Y$ parts of aluminium powder. $X, Y$ respectively are
What is obtained when a mixture of $Cu_2O$ and $Cu_2S$ is heated?
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