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Calcination is the process of heating the ore _____.

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Important Questions on Metals and Non-Metals

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General Science for Competitive Exams>Chapter 13 - Metals and Non-Metals>EXERCISE>Q 13
Which of the following is an oxide ore?
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General Science for Competitive Exams>Chapter 13 - Metals and Non-Metals>EXERCISE>Q 14
Removal of impurities from ore is known as _____.
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General Science for Competitive Exams>Chapter 13 - Metals and Non-Metals>EXERCISE>Q 15
Which reducing agent is used in chemical reduction?
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General Science for Competitive Exams>Chapter 13 - Metals and Non-Metals>EXERCISE>Q 16
Aluminium is used in thermite welding because _____.
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General Science for Competitive Exams>Chapter 13 - Metals and Non-Metals>EXERCISE>Q 17
The process of extraction of metal from its ores, is known as _____.
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General Science for Competitive Exams>Chapter 13 - Metals and Non-Metals>EXERCISE>Q 18
The process to heat the ore in the presence of excess supply of air below its melting point is called _____.
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General Science for Competitive Exams>Chapter 13 - Metals and Non-Metals>EXERCISE>Q 19
Brass is a mixture of _____.
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General Science for Competitive Exams>Chapter 13 - Metals and Non-Metals>EXERCISE>Q 20
Sodium is obtained by the electrolysis of _____.