Practice test

Metals, non metals and metallurgy - Test Set 1

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 materials is strongest?
    1. German silver
    2. Brass
    3. Steel
    4. Graphene
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  2. Question 2

    Which one of the following elements forms the maximum number of compounds?
    1. Hydrogen
    2. Carbon
    3. Nitrogen
    4. Oxygen
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  3. Question 3

    The highest amount of carbon is in
    1. pig iron
    2. wrought iron
    3. steel
    4. alloy steel
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  4. Question 4

    Which one of the following is called dry ice?
    1. Dehydrated ice
    2. Solid hydrogen peroxide
    3. Solid water
    4. Solid carbon dioxide
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  5. Question 5

    NDA 2018
    Which one of the following is the purest form of carbon?
    1. Charcoal
    2. Coke
    3. Fullerene
    4. Carbon black
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  6. Question 6

    Incomplete combustion of a fuel gives poisonous ______ gas.
    1. carbon dioxide
    2. isocyanate
    3. carbon monoxide
    4. nitrogen
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  7. Question 7

    BPSC (Pre) 2019
    What is the bond order of CO group?
    1. 1
    2. 2.5
    3. 3.5
    4. 3
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  8. Question 8

    Water gas is
    1. CO + H₂
    2. CO + H₂O
    3. CO₂ + H₂O
    4. None of the above
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  9. Question 9

    Which one of the following pair is not correctly matched?
    1. Dry ice : Solid carbon dioxide
    2. Sevin : Insecticide
    3. Teflon : Polymer containing fluorine
    4. Fullerene : Organic compound containing fluorine
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  10. Question 10

    How is carbon black obtained?
    1. By heating wood at high temperature in absence of air
    2. By heating coal at high temperature in absence of air
    3. By burning hydrocarbons in a limited supply of air
    4. By heating coal at high temperature in presence of air
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  11. Question 11

    Which one of following is water gas?
    1. Mixture of carbon monoxide and hydrogen
    2. Mixture of carbon monoxide and nitrogen
    3. Mixture of carbon dioxide and water vapour
    4. Mixture of carbon monoxide and water vapour
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  12. Question 12

    Silicon is a polymer of
    1. silicon tetrachloride
    2. dialkyl dichloro silane
    3. silane
    4. tetraalkyl silane
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  13. Question 13

    The percentage of lead in lead pencil is
    1. 0
    2. 100
    3. 77
    4. 65
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  14. Question 14

    Which of the following are the two main constituents of granite?
    1. Iron and silica
    2. Iron and silver
    3. Silica and aluminium
    4. Iron oxide and potassium
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  15. Question 15

    Consider the following statements:
    I. Diamond is hard and graphite is soft.
    II. Diamond is soft and graphite is hard.
    III. Diamond is a bad conductor, but graphite is a good conductor.
    IV. Diamond is a good conductor, but graphite is a bad conductor.
    Which of the statement(s) given above is/are correct?
    1. I and III
    2. Only I
    3. II and III
    4. I and IV
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  16. Question 16

    Which of the following is also known as laughing gas?
    1. Nitric oxide
    2. Nitrous oxide
    3. Nitrogen pentoxide
    4. Nitrogen
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  17. Question 17

    Which among the following is a cation?
    1. Ammonium
    2. Iodide
    3. Fluoride
    4. Chloride
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  18. Question 18

    NDA 2018
    Which one of the following is not used as a fertilizer?
    1. Ammonium nitrate
    2. Ammonium sulphide
    3. Ammonium phosphate
    4. Ammonium sulphate
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  19. Question 19

    Which of the following is used as anesthetic?
    1. NH₃
    2. NO
    3. NO₂
    4. N₂O
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  20. Question 20

    The highest volume of gases in lower atmosphere is comprised of
    1. hydrogen
    2. carbon dioxide
    3. oxygen
    4. nitrogen
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