General principle and processes of isolation of elements part-2
Download as PDF
NCERT Class 12 Chemistry Chapter-wise Solutions
- 1 – The Solid State
- 2 – Solutions
- 3 – Electrochemistry
- 4 – Chemical Kinetics
- 5 – Surface Chemistry
- 6 – General Principles and Processes of Isolation of Elements
- 7 – The p-Block Elements
- 8 – The d-and f-Blocks Elements
- 9 – Coordination Compounds
- 10 – Haloalkanes and Haloarenes
- 11 – Alcohols, Phenols and Ethers
- 12 – Aldehydes, Ketones and Carboxylic Acids
- 13 – Amines
- 14 – Biomolecules
- 15 – Polymers
- 16 – Chemistry in Everyday Life
CHAPTER SIX GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
- 6.1 Occurrence of Metals
- 6.2 Concentration of Ores
- 6.3 Extraction of Crude Metal from Concentrated Ore
- 6.4 Thermodynamic Principles of Metallurgy
- 6.5 Electrochemical Principles of Metallurgy
- 6.6 Oxidation Reduction
- 6.7 Refining
- 6.8 Uses of Aluminium, Copper, Zinc and Iron
NCERT Solutions class 12 Chemistry Isolation of Elements
15. How is ‘cast iron’ different from ‘pig iron”?
16. Differentiate between “minerals” and “ores”.
17. Why copper matte is put in silica lined converter?
18. What is the role of cryolite in the metallurgy of aluminium?
19. How is leaching carried out in case of low grade copper ores?
20. Why is zinc not extracted from zinc oxide through reduction using CO?
21. The value of 
for formation of 
is 
and that of 
is 
. Is the reduction of possible with Al?
22. Out of C and CO, which is a better reducing agent for ZnO?
23. The choice of a reducing agent in a particular case depends on thermodynamic factor. How far do you agree with this statement? Support your opinion with two examples.
24. Name the processes from which chlorine is obtained as a by-product. What will happen if an aqueous solution of NaCl is subjected to electrolysis?
25. What is the role of graphite rod in the electrometallurgy of aluminium?
26. Outline the principles of refining of metals by the following methods:
(i) Zone refining
(ii) Electrolytic refining
(iii) Vapour phase refining
27. Predict conditions under which Al might be expected to reduce MgO.
To download NCERT Solutions for class 12 Chemistry, Physics, Biology, History, Political Science, Economics, Geography, Computer Science, Home Science, Accountancy, Business Studies and Home Science; do check CBSE.club app or website. CBSE.club provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through and CBSE.club website.
covers both organic and inorganic chemistry. Please note that CBSE has reduced the syllabus for class 12 Chemistry. So, you must check the latest syllabus of CBSE while going through the NCERT solution of any chapter given in the class 12 NCERT book.