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Metallurgy Chemistry - Metallurgy

ICSE - STD 10 - Chemistry (ICSE - English Medium). 222 questions in this chapter.

Question types

Metallurgy question types

222 questions across 7 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.

222
Questions
7
Question groups
5
Question types
Sample Questions

Metallurgy questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
Choose the correct answer from the options given below :
The reason for using Aluminium in the alloy duralium is : ________ .
  • A
    Aliminium is brittle
  • B
    Aliminium gives strength
  • ✓
    Aluminium brings lightness
  • D
    Aluminium lowers melting point

Answer: C.

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Q 3MCQ1 Mark
Choose the correct answer:
Brass is an alloy of ________ .
  • A
    Copper and tin
  • ✓
    Copper and zinc
  • C
    Zinc and lead
  • D
    Lead and tin

Answer: B.

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Q 4MCQ1 Mark
Choose the correct option:
A metallic oxide which cannot be reduced by normal reducing agents:
  • ✓
    Zinc oxide
  • B
    Magnesium oxide
  • C
    Copper(II) oxide
  • D
    Iron(III) oxide

Answer: A.

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Q 5MCQ1 Mark
Choose the correct option :
The metal other than aluminium, which has a strong affinity for oxygen is:
  • A
    Copper
  • ✓
    Magnesium
  • C
    Silver
  • D
    Gold

Answer: B.

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Q 12[3 Mark Question Answer]3 Marks
The following is a sketch of an electrolytic cell used in the extraction of aluminium :

(a) What is the substance of which the electrode A and B are made?
(b) At which electrode (A or B) is aluminium formed?
(c) What are the two aluminium compounds in the electrolyte C?
(d) Why is it necessary for electrode B to be continuously replaced?
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Q 13[3 Mark Question Answer]3 Marks
The following is an extract from 'Metals in the service of Man, Alexander and street /Pelican 1976':
'Alumina (aluminium oxide) has a very high melting point of over $2000^oC$ so that it cannot readily be liquefied. However, conversion of alumina to aluminium and oxygen, by electrolysis, can occur when it is dissolved in some other substance'.
(a) Which solution is used to react with bauxite as a first step in obtaining pure aluminium oxide?
(b) The aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide. Write the balanced chemical equation for this reaction.
(c) Name the element which serves both as the anode and the cathode in the extraction of aluminium.
(d) Write the balanced chemical equation for the reaction that occurs at the cathode during the extraction of aluminium by electrolysis.
(e) Give the balanced chemical equation for the reaction which occurs at the anode when aluminium is purified by electrolysis.
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Q 22Fill in the blanks.1 Mark
Fill in the blanks:
During the concentration of bauxite ore, aluminium goes in ………. (soluble/insoluble) part because of its …………(acidic/basic/amphoteric) nature.
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Q 25Fill in the blanks.1 Mark
Fill in the blanks:
Usually …………. (sulphide/carbonate) ores are subjected to ……………. (calcination/roasting) which is done in the absence of air.
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Q 29Match The Following.4 Marks
Given below in column A is a schematic diagram of an electrolytic cell used in the extraction of aluminium. Identify the parts labelled as A, B and C with the correct options from the column B.
Column AColumn B
Image1. Carbon
2. Graphite
3. Aluminium oxide $\left( Al _2 O _3\right)$ and Cryolite $\left( Na _3 AlF _6\right)$
4. Copper sulphate solution
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