Class 12 Chemistry Chapter 6 General Principles and Processes of Isolation of Elements NCERT Solutions


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 for formation of Cr2O3 is - 540 kJmol-1 and that of Al2O3 is - 827 kJmol-1. Is the reduction of Cr2O3 possible with Al ?

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)