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Chapter 1: Chemical Reactions and Equations
44 questions
Chapter 2: Acids, Bases and Salts
44 questions
Chapter 3: Metals and Non-metals
63 questions
(a) Reactivity of Al decreases if it is dipped in HNO3
(b) Carbon cannot reduce the oxides of Na or Mg
(c) NaCl is not a conductor of electricity in solid state whereas it does conduct electricity in aqueous solution as well as in molten state
(d) Iron articles are galvanised.
(e) Metals and Non-metals like Na, K, Ca and Mg are never found in their free state in nature.
Chapter 4: Carbon and its Compound
30 questions
Chapter 5: Periodic Classification of Elements
46 questions
Chapter 6: Life Processes
75 questions
Chapter 7: Control and Coordination
41 questions
Chapter 8: How do Organism Reproduce?
52 questions
Chapter 9: Heredity and Evolution
45 questions
Chapter 10: Light -Reflection and Refraction
22 questions
Chapter 11: The Human Eye and Colourful World
20 questions
Chapter 12: Electricity
20 questions
Chapter 13: Magnetic Effects of Electric Current
13 questions
Chapter 14: Sources of Energy
28 questions
Chapter 15: Our Environment
36 questions
Chapter 16: Sustainable Management of Natural Resources
36 questions
Question 60: Give the steps involved in the extraction of Metals and Non-metals of low and medium reactivity from their respective sulphide ores.
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Text solution
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For example, Cinnabar is heated in the air which mercuric sulphide gets oxidised to produce mercuric oxide.
Mercuric oxide is further reduced by heating to get pure mercury.
In the case of zinc which is a metal of medium reactivity and its ore is zinc blende.
Zinc blend is roasted to get zinc oxide.
When zinc oxide is reduced in the presence of coke, pure zinc metal is produced.
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Practice more questions from Science Exemplar (NCERT Exemplar)
(a) Reactivity of Al decreases if it is dipped in HNO3
(b) Carbon cannot reduce the oxides of Na or Mg
(c) NaCl is not a conductor of electricity in solid state whereas it does conduct electricity in aqueous solution as well as in molten state
(d) Iron articles are galvanised.
(e) Metals and Non-metals like Na, K, Ca and Mg are never found in their free state in nature.
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| Question Text | Question 60:
Give the steps involved in the extraction of Metals and Non-metals of low and medium reactivity from their respective sulphide ores. |
| Updated On | Feb 28, 2023 |
| Topic | Metals and Non-metals |
| Subject | Science |
| Class | Class 10 |
| Answer Type | Text solution:1 Video solution: 2 |
| Upvotes | 298 |
| Avg. Video Duration | 5 min |
