Practice test

Metals, non metals and metallurgy - Test Set 5

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    Which one of the following is the best conductor of heat?
    1. Water
    2. Mercury
    3. Benzene
    4. Leather
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  2. Question 2

    Mercury is a
    1. Solid metal
    2. Liquid metal
    3. Solid non-metal
    4. Liquid non-metal
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  3. Question 3

    SSC 2016
    Which of the following doesn’t dissolve in water?
    1. Lead sulphate
    2. Zinc sulphate
    3. Potassium
    4. Sodium
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  4. Question 4

    Chattisgarh PCS (Pre.) 2015
    Which of the following do not react with water at all?
    1. Iron
    2. Lead
    3. Magnesium
    4. Aluminium
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  5. Question 5

    Which of the following mineral is to be found in the monazite sand?
    1. Potassium
    2. Uranium
    3. Thorium
    4. Sodium
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  6. Question 6

    Uraninite is the ore/mineral of
    1. Zinc
    2. Uranium
    3. Titanium
    4. Aluminium
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  7. Question 7

    From which of the following mineral radium is obtained?
    1. Rectile
    2. Haematite
    3. Lime stone
    4. Pitchblende
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  8. Question 8

    Bauxite is the ore of
    1. iron
    2. aluminium
    3. copper
    4. gold
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  9. Question 9

    Highly reactive metals are found in combined state in nature. The natural substances containing metal in combined form are known as minerals. A mineral is called ore if
    1. the metal present in the mineral is costly
    2. a metal can be extracted from it
    3. a metal can be profitably extracted from it
    4. a metal can be profitably extracted from it
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  10. Question 10

    In general the metal obtained by reduction contains impurities. Presence of small impurities makes a metal quite hard because the impurities
    1. change the lattice structure of metals
    2. reduce the number of slide planes
    3. reduce the number of mobile electrons
    4. reduce the crystal symmetry
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  11. Question 11

    Gravity separation method is based upon
    1. difference in densities of ore particles and impurities
    2. difference in chemical properties of the particles and impurities
    3. preferential washing of ores and gangue particles
    4. None of the above
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  12. Question 12

    In a process of concentration of ore, an upward stream of running water is used to wash the powdered ore. The lighter gangue particles are washed away and the heavier ores are left behind. Which method of concentration of ore is discussed in the above passage?
    1. Hydraulic washing
    2. Leaching
    3. Magnetic separation
    4. Both (a) and (b)
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  13. Question 13

    The process of extraction of iron from its ore is called
    1. oxidation
    2. fractional distillation
    3. electric decomposition
    4. reduction
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  14. Question 14

    Consider the following statements:
    I. All the ores are minerals, but all the minerals are not ores.
    II. Some minerals may contain a large percentage of metal whereas others may contain only a small percentage of the metals.
    Which of the above statement(s) is/are correct?
    1. Only I
    2. Only II
    3. I and II
    4. None of the above
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  15. Question 15

    Consider the following statements:
    I. In roasting the ores are generally converted into metal oxides.
    II. In roasting ore becomes porous and moisture is removed.
    III. An ore is heated below its melting point in the roasting process.
    Which of the above statements are correct about roasting?
    1. I and II
    2. II and III
    3. I and III
    4. I, II and III
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  16. Question 16

    Consider the following statements:
    I. Copper metal is extracted by thermal reduction process.
    II. The magnetic separation is used for increasing concentration of the haematite ore.
    III. Coke acts as the reducing agent for the production of steel or iron.
    Which of the above statements are correct?
    1. I and II
    2. II and III
    3. I and III
    4. I, II and III
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  17. Question 17

    Consider the following statements:
    I. Cinnabar is an ore of (Hg).
    II. The ores of more density are separated by gravity separation process.
    III. Zincite is an example of oxide ore.
    Which of the above statement(s) is/are correct?
    1. I and II
    2. I and III
    3. I and III
    4. I, II and III
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  18. Question 18

    Statement I: Lime, silica, and magnesium oxide are commonly used as refractory materials in lining of furnace.
    Statement II: These can withstand very high temperature.
    1. Both the Statements are individually true and Statement II is the correct explanation of Statement I
    2. Both the Statements are individually true but Statement II is not the correct explanation of Statement I
    3. Both the Statements are individually true but Statement II is not the correct explanation of Statement I
    4. Statement I is false, but Statement II is true
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  19. Question 19

    Which of the following is made up of carbon only?
    1. Kevlar
    2. Lexan
    3. Graphene
    4. Spider silk
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  20. Question 20

    Which of the following is also used as a lubricant?
    1. Cuprite
    2. Graphite
    3. Haematite
    4. Cryolite
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