Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
DifficultWhich one of the following reactions does not occur during the extraction of copper?
- A$2 Cu_2S + 3 O_2 \rightarrow 2 Cu_2O + 2 SO_2$
- B$2 FeS + 3 O_2 \rightarrow 2 FeO + 2 SO_2$
- C$CaO + SiO_2 \rightarrow CaSiO_3$
- D$FeO + SiO_2 \rightarrow FeSiO_3$
Explore More
Similar Questions
Metallurgy is the process of
Easy
View SolutionExplain the following:
$(a)$ $CO_2$ is a better reducing agent below $710 \ K$ whereas $CO$ is a better reducing agent above $710 \ K$.
$(b)$ Generally,sulphide ores are converted into oxides before reduction.
$(c)$ Silica $(SiO_2)$ is added to the sulphide ore of copper in the reverberatory furnace.
$(d)$ Carbon and hydrogen are not used as reducing agents at high temperatures for certain metals.
$(e)$ Vapour phase refining method is used for the purification of $Ti$.
$(a)$ $CO_2$ is a better reducing agent below $710 \ K$ whereas $CO$ is a better reducing agent above $710 \ K$.
$(b)$ Generally,sulphide ores are converted into oxides before reduction.
$(c)$ Silica $(SiO_2)$ is added to the sulphide ore of copper in the reverberatory furnace.
$(d)$ Carbon and hydrogen are not used as reducing agents at high temperatures for certain metals.
$(e)$ Vapour phase refining method is used for the purification of $Ti$.
In the electrolysis of $Al_2O_3$ by the Hall-Heroult process,which of the following statements is correct?
Medium
View SolutionWhat is the percentage of carbon in mild steel?
Easy
View SolutionWhich of the following alloys is used for ultra-high speed flight?
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