Materials & Construction Mcqs for Chemical


Q.  To improve the machinability of steel by its softening, it is subjected to __________________?

a. Cold working
b. Annealing
c. Shot blasting
d. Heating


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  ‘Age hardening’ of duralumin is due to____________________?
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MCQs:  The softest material just next to talc in the Mho’s scale is___________________?
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MCQs:  Which of the following comprises of hydrocarbons ?
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MCQs:  Alinco, which is a aluminium-cobalt-nickel steel, is used for making __________________?
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MCQs:  Containers made of high silicon cast iron (14% Si) are not suitable for the storage of ____________________?
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MCQs:  Which of the following is not used as filter aid ?
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MCQs:  Which of the following mechanical conveyors does not come under the division „carriers‟ ?
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MCQs:  Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is ______________ microns?
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MCQs:  Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter) ?
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MCQs:  Angle of nip of the crushing rolls does not depend upon the_______________?
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MCQs:  Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines ?
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MCQs:  Flow of filtrate through the cake in a plate and frame filter press is best described by the ______________ equation?
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MCQs:  Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to ____________ and the cycle time (where, μ = filtrate viscosity Rm = filter medium resistance Rc = cake resistance)?
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MCQs:  Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids (> 50000 centipoise) ?
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MCQs:  The specific surface of spherical particles is proportional to (where, Dp = diameter of particle)?
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MCQs:  Separation of materials of the same density based on their sizes by using then-different rates of flow is called__________________?
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MCQs:  Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively ?
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MCQs:  Energy consumed for crushing one ton of material ranges from ______________ kWh?
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MCQs:  Sphericity of raschig ring (whose length and diameter are equal) is___________________?
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MCQs:  Which of the following gives the crushing energy required to create new surface ?
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