Please refer to CBSE Class 12 Chemistry HOTs Isolation of Elements. Download HOTS questions and answers for Class 12 Chemistry. Read CBSE Class 12 Chemistry HOTs for Unit 6 General Principles and Processes of Isolation of Elements below and download in pdf. High Order Thinking Skills questions come in exams for Chemistry in Class 12 and if prepared properly can help you to score more marks. You can refer to more chapter wise Class 12 Chemistry HOTS Questions with solutions and also get latest topic wise important study material as per NCERT book for Class 12 Chemistry and all other subjects for free on Studiestoday designed as per latest CBSE, NCERT and KVS syllabus and pattern for Class 12
Unit 6 General Principles and Processes of Isolation of Elements Class 12 Chemistry HOTS
Class 12 Chemistry students should refer to the following high order thinking skills questions with answers for Unit 6 General Principles and Processes of Isolation of Elements in Class 12. These HOTS questions with answers for Class 12 Chemistry will come in exams and help you to score good marks
HOTS Questions Unit 6 General Principles and Processes of Isolation of Elements Class 12 Chemistry with Answers
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UNIT - 6
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
1 Mark questions
1. During metallurgical process, in the extraction of metal, flux is added. Why?
2. ‘Reduction of a metal oxide is easier if the metal formed is in liquid state at the temperature of reduction. Why?
3. Although thermodynamically feasible, in practice, magnesium metal is not used for the reduction of alumina in the metallurgy of aluminium. Why?
4. Can Mg reduce Al2O3 and Al reduces MgO? State the conditions required for this reduction process.
2 / 3 Marks Questions
5. At a site, low grade copper ores are available and zinc and iron scraps are also available. Which of the two scraps would be more suitable for reducing the leached copper ore and why?
6. The value of DfGo for formation of Cr2O3 is – 540 kJ mol-1 and that of Al2O3 is – 827 kJ mol-1. Is the reduction of Cr2O3 possible with Al?
7. Why is zinc not extracted from zinc oxide through reduction using CO?
8. Cinnabar (HgS) abd Galena (PbS) on roasting often give their respective metals but Zinc blende (ZnS) does not. Why?
9. The choice of a reducing agent in a particular case depends upon thermodynamic factor. How far do you agree with this statement? Explain?
10.“The extraction of Ag by leaching with NaCN involves both oxidation and reduction”. Explain?
11.Out of C and CO which is a better reducing agent at 673 K?
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CBSE Class 12 Chemistry Unit 6 General Principles and Processes of Isolation of Elements HOTS
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HOTS for Chemistry CBSE Class 12 Unit 6 General Principles and Processes of Isolation of Elements
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Unit 6 General Principles and Processes of Isolation of Elements HOTS Chemistry CBSE Class 12
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Unit 6 General Principles and Processes of Isolation of Elements CBSE Class 12 HOTS Chemistry
Regular HOTS practice helps to gain more practice in solving questions to obtain a more comprehensive understanding of Unit 6 General Principles and Processes of Isolation of Elements concepts. HOTS play an important role in developing an understanding of Unit 6 General Principles and Processes of Isolation of Elements in CBSE Class 12. Students can download and save or print all the HOTS, printable assignments, and practice sheets of the above chapter in Class 12 Chemistry in Pdf format from studiestoday. You can print or read them online on your computer or mobile or any other device. After solving these you should also refer to Class 12 Chemistry MCQ Test for the same chapter
CBSE HOTS Chemistry Class 12 Unit 6 General Principles and Processes of Isolation of Elements
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