+91-8076753736 [email protected]

-->

General Principles And Processes Of Isolation Of Elements

Question

Wired Faculty App

Giving examples differentiate between 'roasting' and 'calcium'.

Solution

Roasting	Calcination
1. It is a process of heating the ore in presence of excess of air.	1. It is a process of heating strongly in the absence of air.
2. It is used to convert the sulphides ore into oxide ore. 2ZnS(s) + 3O₂(g) →2ZnO(s) + 2SO₂ (g)	2. It is used to convert the carbonate or hydrated oxide ores to oxide ore. ZnCO₃ (s) →ZnO(s) + CO₂ (g)

Some More Questions From General Principles And Processes of Isolation Of Elements Chapter

Which of the ores mentioned in Table 6.1. could be concentrated by magnetic separation method?
Table 6.1 Principal ores of some important metal.

What is the significance of leaching in the extraction of aluminium?

Is it true that under certain conditions. Mg can reduce Al₂O₃and Al can reduce MgO? What are those conditions?

What is the role of depressant in froth floatation process?

Titanium is a metal of modern times. It is obtained as oxide. Why it could not be extracted earlier despite its wide occurence?

Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present?

What criterion is followed for the selection of the stationary phase in chromatography?

What is the role of cryolite in the metallurgy of aluminium?

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation