Class 12 Chemistry Chapter 6 NCERT Solutions – Free PDF Download
The most significant practice materials for the CBSE Class 12 Chemistry test and competitive exams are the NCERT Solutions for Class 12 Chemistry Chapter 6 General Concepts and Methods of Isolation of Elements. Students must take Class 12 Chemistry carefully whether they plan to continue their studies or if they want to get ready for a career. The NCERT Answers for Class 12 Chemistry include both exceptional and significant questions from past years' test questions in addition to answers to textbook questions.
Any questions and concerns about any chapter of CBSE Class 12 Chemistry can be answered using the NCERT Answers for Class 12 Chemistry. The solutions are clear and effectively organized in simple words for learning. The associated link provided below allows students to download the NCERT Answers for Class 12 Chemistry Chapter 6.
Important Questions from Class 12 Chemistry (General Principles and Processes of Isolation of Elements) NCERT Solutions
00:20 Numerical 6.1
Copper can be extracted by hydrometallurgy but not zinc. Explain.
00:20 Numerical 6.2
What is the role of depressant in froth floatation process?
00:20 Numerical 6.3 Why
is the extraction of copper from pyrites more difficult than that from its oxide
are through reduction?
00:20 Numerical 6.4
Explain: (i) Zone refining (ii) Column chromatography.
00:20 Numerical 6.5 Out
of C and CO, which is a belter reducing agent at 673 K?
00:20 Numerical 6.6
Name the common elements present in the anode mud in electrolytic refining of
copper. Why are they so present?
00:20 Numerical 6.7
Write down the reactions taking place in different zones in the blast furnace during
the extraction of iron.
00:20 Numerical 6.8
Write chemical reactions taking place in the extraction of zinc from zinc
blende.
00:20 Numerical 6.9
State the role of silica in the metallurgy of copper.
00:20 Numerical 6.10
What is meant by the term "chromatography”?
00:20 Numerical 6.11
What criterion is followed for the selection of the stationary phase in chromatography?
00:20 Numerical 6.12
Describe a method for refining nickel.
00:20 Numerical 6.13
How can you separate alumina from silica in a bauxite ore associated with silica?
Give equations. if any.
00:20 Numerical 6.14
Giving examples. Differentiate between 'roasting' and 'calcination'.
00:20 Numerical 6.15
How is 'cast iron' different from “pig iron”?
00:20 Numerical 6.16
Differentiate between “minerals” and "ores".
00:20 Numerical 6.17
Why copper matte is put in silica lined converter?
00:20 Numerical 6.18
What is the role of cryolite in the metallurgy of aluminium?
00:20 Numerical 6.19
How is leaching carried out in case of low grade copper ores?
00:20 Numerical 6.20
Why is zinc not extracted from zinc oxide through reduction using CO?
00:20 Numerical 6.21
The value of
00:20 Numerical 6.22
Out of C and CO, which is a better reducing agent for ZnO ?
00:20 Numerical 6.23
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.
00:20 Numerical 6.24
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?
00:20 Numerical 6.25 What
is the role of graphite rod in the electrometallurgy of aluminium?
00:20 Numerical 6.26
Outline the principles of refining of metals by the following methods:
(i) Zone refining
(ii) Electrolytic refining
(iii) Vapour phase
refining
00:20 Numerical 6.27
Predict conditions under which Al might be expected to reduce MgO.
(Hint: See Intext
question 6.4)