Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
EasyAddition of high proportions of manganese makes steel useful in making rails of rail-roads because manganese
- AGives hardness to steel
- BHelps the formation of oxides of iron
- CCan remove oxygen and sulphur
- DBoth $(a)$ and $(c)$
Explore More
Similar Questions
Match List-$I$ with List-$II$.
List-$I$ List-$II$ $A$. Concentration of gold ore $I$. Aniline $B$. Leaching of alumina $II$. $NaOH$ $C$. Froth stabiliser $III$. $SO_2$ $D$. Blister copper $IV$. $NaCN$
Choose the correct answer from the options given below.
| List-$I$ | List-$II$ |
|---|---|
| $A$. Concentration of gold ore | $I$. Aniline |
| $B$. Leaching of alumina | $II$. $NaOH$ |
| $C$. Froth stabiliser | $III$. $SO_2$ |
| $D$. Blister copper | $IV$. $NaCN$ |
Choose the correct answer from the options given below.
Steel is manufactured from
Easy
View SolutionWhich of the following reactions is $NOT$ entropy-driven with reference to extractive metallurgy? (unbalanced reactions)
Medium
View SolutionMatch items of Column-$I$ with the items of Column-$II$ and assign the correct code :
Column $I$ Column $II$ $A$. Cyanide process $i$. Ultrapure $Ge$ $B$. Froth floatation $ii$. Dressing of $ZnS$ $C$. Electrolytic reduction $iii$. Extraction of $Al$ $D$. Zone refining $iv$. Extraction of $Au$ $v$. Purification of $Ni$
| Column $I$ | Column $II$ |
| $A$. Cyanide process | $i$. Ultrapure $Ge$ |
| $B$. Froth floatation | $ii$. Dressing of $ZnS$ |
| $C$. Electrolytic reduction | $iii$. Extraction of $Al$ |
| $D$. Zone refining | $iv$. Extraction of $Au$ |
| $v$. Purification of $Ni$ |
MediumNEET 2016
View SolutionWhich of the following statement$(s)$ is/are incorrect?
Medium
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