Q40.Boron and silicon of very high purity can be obtained through : (1) liquation (2) zone refining (3) vapour phase refining (4) electrolytic refining
What This Question Tests
This question tests the knowledge of metal refining methods, specifically identifying zone refining as the suitable method for obtaining highly pure boron and silicon, which are semiconductors.
Concepts Tested
📚 NCERT Sections This Tests
14.1 — In An N-Type Silicon, Which Of The Following Statement Is True:
Physics Class 12 · Chapter 14
14.1 In an n-type silicon, which of the following statement is true: (a) Electrons are majority carriers and trivalent atoms are the dopants. (b) Electrons are minority carriers and pentavalent atoms are the dopants. (c) Holes are minority carriers and pentavalent atoms are the dopants. (d) Holes are majority carriers and trivalent atoms are the dopants.
14.2 — Which Of The Statements Given In Exercise 14.1 Is True For P-Type
Physics Class 12 · Chapter 14
14.2 Which of the statements given in Exercise 14.1 is true for p-type semiconductos.
4.12 — What Are Interstitial Compounds? Why Are Such Compounds Well Known For
Chemistry Class 11 · Chapter 4
4.12 What are interstitial compounds? Why are such compounds well known for transition metals?
📋 Question Details
- Chapter
- Metallurgy
- Topic
- Refining of Metals
- Year
- 2020
- Shift
- 05 Sep Shift 2
- Q Number
- Q40
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 6: General Principles and Processes of Isolation of Elements
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