Germanium of very high purity is obtained by
- liquation
- vapor phase refining
- distillation
- zone refining
The Correct Option is D
Solution and Explanation
Top Questions on General Principles and Processes of Isolation of Elements
- On reaction of Lead Sulphide with dilute nitric acid which of the following is not formed ?
- JEE Main - 2024
- Chemistry
- General Principles and Processes of Isolation of Elements
- Given below are two statements:
Statement I : During Electrolytic refining, the pure metal is made to act as anode and its impure metallic form is used as cathode
Statement II : During the Hall-Heroult electrolysis process, purified $Al _2 O _3$ is mixed with $Na _3 AlF _6$ to lower the melting point of the mixture
In the light of the above statements, choose the most appropriate answer from the options given below:- JEE Main - 2023
- Chemistry
- General Principles and Processes of Isolation of Elements
The reaction that does NOT take place in a blast furnace between 900 K to 1500 K temperature range during extraction of iron is?
- NEET (UG) - 2023
- Chemistry
- General Principles and Processes of Isolation of Elements
Consider the following statements about the oxides of halogens
A. At room temperature, OF2; is thermally stable
B. Order of stability of oxides of halogens is I > Br > Cl
C. I2O5 is used in the estimation of CO
D. ClO2; is used as a bleaching agent
The correct statements are- TS EAMCET - 2023
- Chemistry
- General Principles and Processes of Isolation of Elements
- Which of the following ore is not in oxide form?
- GUJCET - 2023
- Chemistry
- General Principles and Processes of Isolation of Elements
Questions Asked in KEAM exam
- A Spherical ball is subjected to a pressure of 100 atmosphere. If the bulk modulus of the ball is 1011 N/m2,then change in the volume is:
- KEAM - 2023
- mechanical properties of solids
- Two identical solid spheres,each of radius 10cm,are kept in contact. If the mass of inertia of this system about the tangent passing through the point of contact is 0. Then mass of each sphere is:
- KEAM - 2023
- System of Particles & Rotational Motion
- The value of a(≠0) for which the equation \(\frac{1}{2}(x-2)^2+1=\sin(\frac{a}{x})\) holds is/are
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- Trigonometric Functions
- \(∫xlog(1+x^2)dx=\)?
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- Integration by Parts
- A uniform thin rod of mass 3kg has a length of 1m. If a point mass of 1kg is attached to it at a distance of 40cm from its center,the center of mass shifts by a distance of:
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Concepts Used:
General Principles and Processes of Isolation of Elements
What are Ores and Minerals?
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –
- Concentration of the ore
- Isolation of the metal from its concentrated ore
- Purification of the metal