हिंदी

Steel is an alloy of iron and ______.

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प्रश्न

Steel is an alloy of iron and ______.

विकल्प

  • Nickel

  • Zinc

  • Carbon

  • Aluminium

MCQ
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उत्तर

Steel is an alloy of iron and Carbon.

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अध्याय 7: Metallurgy - EXERCISE-7D [पृष्ठ १३६]

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एस पी सिंग Concise Chemistry [English] Class 10 ICSE
अध्याय 7 Metallurgy
EXERCISE-7D | Q 9. (b) | पृष्ठ १३६

संबंधित प्रश्न

How is the following metallic oxide reduced? Write the equation:

Zinc oxide


what is the function of cryolite in the extraction of aluminium, other than acting as a solvent for bauxite?


Name a non-metallic element which has a metallic lustre


Name a non-metallic element which is a liquid at ordinary temperatures


With reference to the reduction of copper (II) oxide , iron (II) oxide, lead (II) oxide and magnesium oxide; place the oxides in order of increasing ease of reduction.[i.e. first write the oxide that is most difficult to reduce and at last, the oxide, that is most easily reduced.]


What metallic property is shown by the non-metal graphite?


In order to obtain one tone of aluminium, the following inputs are required:
4 tones of bauxite, 150 Kg of sodium hydroxide and 600 Kg of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
(a) When bauxite is treated with sodium hydroxide solution, what happens to:
(i) the aluminium oxide?
(ii) The iron (III) oxide?

Name the following:

The compound formed by the reaction between calcium oxide and silica.


Complete the following by selecting the correct option from the choices given :
The diavalent metal whose oxide is reduced to metal by electrolysis of its fused salt is ________


The following sketch represents the electroplating of an Iron cup with Nickel metal.

Study the diagram and answer the following questions:

  1. During electroplating, the iron cup is placed at the cathode. Why?
  2. Name the ion that must be present in the electrolyte.
  3. State one condition that is necessary to ensure that the deposit is smooth, firm and even.
  4. Write the reaction taking place at the cathode.
  5. What change would you observe at the anode?

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