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Question 39: Why should the metal sulphides and carbonates be
Science Exemplar
Science Exemplar

Class 10

NCERT Exemplar

Publisher:
NCERT
Subject:
Science
1

Chapter 1: Chemical Reactions and Equations

44 questions

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2

Chapter 2: Acids, Bases and Salts

44 questions

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3

Chapter 3: Metals and Non-metals

63 questions

Q1
Question 38: During extraction of Metals and Non-metals, electolytic refining is used to obtain pure Metals and Non-metals.
(a) Which material will be used as anode and cathode for refining of silver metal by this process?
(b) Suggest a suitable electrolyte also.
(c) In this electrolytic cell, where do we get pure silver after passing electric current?
Q2
Question 39: Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?
Q3
Question 40: Generally, when Metals and Non-metals are treated with mineral acids, hydrogen gas is liberated but when Metals and Non-metals (except Mn and Mg), treated with HNO3, hydrogen is not liberated, why?
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4

Chapter 4: Carbon and its Compound

30 questions

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5

Chapter 5: Periodic Classification of Elements

46 questions

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6

Chapter 6: Life Processes

75 questions

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7

Chapter 7: Control and Coordination

41 questions

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8

Chapter 8: How do Organism Reproduce?

52 questions

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9

Chapter 9: Heredity and Evolution

45 questions

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10

Chapter 10: Light -Reflection and Refraction

22 questions

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11

Chapter 11: The Human Eye and Colourful World

20 questions

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12

Chapter 12: Electricity

20 questions

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13

Chapter 13: Magnetic Effects of Electric Current

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14

Chapter 14: Sources of Energy

28 questions

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15

Chapter 15: Our Environment

36 questions

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16

Chapter 16: Sustainable Management of Natural Resources

36 questions

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Question

Question 39: Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?

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Updated on: Dec 1, 2022

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Question 39: Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?
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The extraction of metal becomes easier from its oxide than from its sulphide or the carbonate ore. That is why the metal sulphides and carbonates are converted to metal oxides in the process of extraction of metal from them.
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Q1
Question 38: During extraction of Metals and Non-metals, electolytic refining is used to obtain pure Metals and Non-metals.
(a) Which material will be used as anode and cathode for refining of silver metal by this process?
(b) Suggest a suitable electrolyte also.
(c) In this electrolytic cell, where do we get pure silver after passing electric current?
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Question 39: Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?
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Question 40: Generally, when Metals and Non-metals are treated with mineral acids, hydrogen gas is liberated but when Metals and Non-metals (except Mn and Mg), treated with HNO3, hydrogen is not liberated, why?
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Question Text
Question 39: Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?
Updated OnDec 1, 2022
TopicMetals and Non-metals
SubjectScience
ClassClass 10
Answer TypeText solution:1 Video solution: 1
Upvotes207
Avg. Video Duration2 min