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Building Materials - section-9
  1. Pick up the hypabyssal rock from the following:

    2. A.

     Granite
    B.

     Dolerite
    C.

     Basalt
    D.

     All the above

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  2. Pick up the correct statement from the following:

    3. A.

     Hornblende mineral is brittle
    B.

     Muscovite is also known as white mica and potash mica
    C.

     Biotite is also known as black-mica
    D.

     All the above

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  3. Pick up the incorrect statement from the following:

    4. A.

     Hydraulic lime is generally obtained by burning kankar
    B.

     Hydraulic lime sets slowly as compared to fat lime
    C.

     Hydraulic lime is generally used in lime mortar
    D.

     None of these

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  4. Pick up the correct statement from the following:

    5. A.

     In basic Bessemer process, the steel heats the converter
    B.

     In open-hearth process, the furnace heats the steel
    C.

     In Siemens process, the impurities of pig iron are oxidized by the oxygen of the ore
    D.

     All the above

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  5. Pick up the correct statement from the following:

    6. A.

     In stone arches, the stones are placed with their natural beds radial
    B.

     In cornices, the stones are placed with their natural beds as vertical
    C.

     In stone walls, the stones are placed with their natural beds as horizontal
    D.

     All the above

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  6. Pick up the correct characteristic of Pyroxene from the following:

    7. A.

     It forms octagonal crystals
    B.

     It converts to chlorine by hydration
    C.

     All the above
    D.

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  7. Pick up the correct statement regarding low heat cement from the following:

    8. A.

     It possesses less compressive strength
    B.

     Its initial setting time is about one hour
    C.

     Its final setting time is about 10 hours
    D.

     All the above

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  8. Pick up the correct statement from the following:

    9. A.

     Lime is available in Free State
    B.

     Lime is available by dissolving calcium carbonate in water
    C.

     Lime is nothing but calcium chloride
    D.

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  9. Pick up the correct statement from the following:

    10. A.

     Melamine is obtained from calcium carbide
    B.

     Formaldehyde is prepared synthetically from methane
    C.

     The melamine when reacted with formaldehyde forms the melamine-formaldehyde resin
    D.

     All the above

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  10. Pick up the incorrect statement from the following:

    11. A.

     Plastics are chemical resistant
    B.

     Plastics are durable
    C.

     Plastics are ductile
    D.

     Plastics are excellent electric insulators

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