Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
DifficultIn the leaching of $Ag_2S$ with $NaCN$,a stream of air is also passed. It is because of
- Areversible nature of reaction between $Ag_2S$ and $NaCN$
- Bto oxidize $Na_2S$ formed into $Na_2SO_4$ and sulphur
- Cboth $(A)$ and $(B)$
- Dnone of the above
Explore More
Similar Questions
What is the percentage of carbon in steel?
Easy
View SolutionThe correct option$(s)$ related to the extraction of iron from its ore in the blast furnace operating in the temperature range $900-1500 \ K$ is(are):
$(A)$ Limestone is used to remove silicate impurity.
$(B)$ Pig iron obtained from blast furnace contains about $4 \%$ carbon.
$(C)$ Coke $(C)$ converts $CO_2$ to $CO$.
$(D)$ Exhaust gases consist of $NO_2$ and $CO$.
$(A)$ Limestone is used to remove silicate impurity.
$(B)$ Pig iron obtained from blast furnace contains about $4 \%$ carbon.
$(C)$ Coke $(C)$ converts $CO_2$ to $CO$.
$(D)$ Exhaust gases consist of $NO_2$ and $CO$.
Which of the following alloys contains $Ni$ metal?
Easy
View SolutionBlister copper is ..........
Medium
View SolutionMatch List-$I$ with List-$II$ and select the correct answer using the codes given below the list.
List-$I$ List-$II$ $1. Ti$ $A. \text{Bauxite}$ $2. Si$ $B. \text{Cerussite}$ $3. Al$ $C. \text{Van-Arkel method}$ $4. Pb$ $D. \text{Zone refining}$
| List-$I$ | List-$II$ |
|---|---|
| $1. Ti$ | $A. \text{Bauxite}$ |
| $2. Si$ | $B. \text{Cerussite}$ |
| $3. Al$ | $C. \text{Van-Arkel method}$ |
| $4. Pb$ | $D. \text{Zone refining}$ |
MediumAIIMS 2015
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