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Chemical Engineering Basics-2 - Section-1
  1. __________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.

    2. A.

     Packed
    B.

     Bubble
    C.

     Spray
    D.

     Tray

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  2. Which of the following low melting alloy containing bismuth and lead is used for electric fuse ?

    3. A.

     Wood's metal
    B.

     Babbit metal
    C.

     Monel metal
    D.

     Duralumin

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  3. Adhesives

    4. A.

     Can't be used in the form of pressure sensitive tapes
    B.

     Can't join two dissimilar metals
    C.

     Cure instantaneously after application on a surface
    D.

     None of these

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  4. The most commonly used material for sewers for carrying sewage in the normal situation is

    5. A.

     Asbestos cement
    B.

     Stainiess steel
    C.

     Stoneware
    D.

     Cast iron

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  5. In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________ increases.

    6. A.

     Percentage elongation
    B.

     Brinell hardness
    C.

     Tensile strength
    D.

     All of the above

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  6. Ageing of steel refers to the

    7. A.

     Degradation of steel by corrosion
    B.

     Failure of steel structure by overstress-ing
    C.

     Return of sharp yield point in temper rolled low carbon sheet after a period of time
    D.

     Decarburisation of steel by overheating

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  7. The main reducing agent in iron blast furnace is

    8. A.

     Carbon dioxide
    B.

     Carbon monoxide
    C.

     Oxygen
    D.

     Air

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  8. Main constituent of bone ash is

    9. A.

     Ammonium phosphate
    B.

     Calcium phosphate
    C.

     Animal charcoal
    D.

     Ammonium sulphate

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  9. pH value of rain water in India ranges from

    10. A.

     5.5 to 7.5
    B.

     8 to 9.5
    C.

     3.5 to 5
    D.

     9.5 to 10.5

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  10. Slight displacement of a floating body in liquid makes it to oscillate about its

    11. A.

     Centre of pressure
    B.

     Centre of gravity
    C.

     Metacentre
    D.

     Centre of pressure

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