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The reducing agent in the thermite process is _____.

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Important Questions on Metals and Non-metals

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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Compound X and aluminium are used to join railway tracks.

(i) Identify the compound X.

(ii) Name the reaction. 

(iii) Write down its chemical equation. 

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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
In Alumino-Thermite process aluminium is used as 
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Give one word or a phrase for the following statement:

  • Electrode used as a cathode in electrorefining of impure copper.
HARD
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Carbon cannot reduce the oxides of sodium, magnesium and aluminium to their respective metals. Why? Where are these metals placed in the reactivity series? How are these metals obtained from their ores? Take an example to explain the process of extraction along with chemical equations.
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Which refining process is generally used in the purification of low melting metals?
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Write the balanced chemical equation of the reaction for the formation of metallic iron from ferric oxide by thermit process. Write an application of the process. 
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Refining using liquation method is the most suitable for metals with
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Which type of ores are concentrated by Froth flotation process?
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Compound X and aluminium are used to join railway tracks. Identify the compound.
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Which one of the following metals is refined by liquation?
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Write the steps involved in the extraction of pure metals in the middle of the activity series from their carbonate ores.

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Science>Chemistry>Metals and Non-metals>Occurrence of Metals

During electrolytic production of aluminium, the carbon anodes are replaced from time to time because 

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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Which of the following process is for purification of metals?
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Consider the electrochemical cells(I and II) shown in the following figures and select the correct statement about these cells 

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Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Find the odd man out: 

Tinning, Anodisation, Alloying, Froth floatation. 

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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
In liquation process used for tin Sn, the metal
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Explain the thermite process with the equation.
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
How is copper extracted from its sulphide ore? Explain the various steps supported by chemical equations. Draw labelled diagram for the electrolytic refining of copper.
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Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Give the name and chemical formula of one ore of copper.