Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
EasyHow is cement clinker obtained?
- ABy heating limestone alone.
- BBy heating clay and lime together at high temperatures.
- CBy cooling molten silica.
- DBy mixing gypsum with water.
Explore More
Similar Questions
Match the following:
List-$I$ List-$II$ $A. Al_2O_3 + 2NaOH + 3H_2O \rightarrow 2Na[Al(OH)_4]$ $I. \text{Roasting}$ $B. Ni(CO)_4 \xrightarrow{230^{\circ}C} Ni + 4CO$ $II. \text{Calcination}$ $C. Fe_2O_3 \cdot 3H_2O \xrightarrow{\Delta} Fe_2O_3 + 3H_2O$ $III. \text{Vapour phase refining}$ $D. 2PbS + 3O_2 \rightarrow 2PbO + 2SO_2$ $IV. \text{Electrolysis}$ $V. \text{Leaching}$
The correct answer is:
| List-$I$ | List-$II$ |
| $A. Al_2O_3 + 2NaOH + 3H_2O \rightarrow 2Na[Al(OH)_4]$ | $I. \text{Roasting}$ |
| $B. Ni(CO)_4 \xrightarrow{230^{\circ}C} Ni + 4CO$ | $II. \text{Calcination}$ |
| $C. Fe_2O_3 \cdot 3H_2O \xrightarrow{\Delta} Fe_2O_3 + 3H_2O$ | $III. \text{Vapour phase refining}$ |
| $D. 2PbS + 3O_2 \rightarrow 2PbO + 2SO_2$ | $IV. \text{Electrolysis}$ |
| $V. \text{Leaching}$ |
The correct answer is:
Among the following compounds,the number of those present in copper matte is $......$
$A.$ $CuCO_3$
$B.$ $Cu_2S$
$C.$ $Cu_2O$
$D.$ $FeO$
$A.$ $CuCO_3$
$B.$ $Cu_2S$
$C.$ $Cu_2O$
$D.$ $FeO$
Match List-$I$ with List-$II$ and select the correct answer using the codes given below the lists.
List-$I$ List-$II$ $I$. Cyanide process $A$. Ultrapure $Ge$ $II$. Floatation process $B$. Pine oil $III$. Electrolytic reduction $C$. Extraction of $Al$ $IV$. Zone refining $D$. Extraction of $Au$
| List-$I$ | List-$II$ |
|---|---|
| $I$. Cyanide process | $A$. Ultrapure $Ge$ |
| $II$. Floatation process | $B$. Pine oil |
| $III$. Electrolytic reduction | $C$. Extraction of $Al$ |
| $IV$. Zone refining | $D$. Extraction of $Au$ |
MediumAIIMS 2013
View SolutionBell metal is an alloy of
Stainless steel is an alloy of
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