Materials & Construction Mcqs for Chemical


Q.  Spark plugs are made of______________________?

a. High alumina ceramic
b. Metallic carbides
c. Corundum
d. Carborundum


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Which of the following gives the crushing energy required to create new surface ?
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MCQs:  The most suitable filter for the removal of very small amount of precipitate from very large volumes of water is the _____________ filter?
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MCQs:  Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for__________________?
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MCQs:  In a size reduction crushing operation, feed size is 300 to 1500 mm while the product size is 100 to 300 mm. This is a case of the ________________ crushing?
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MCQs:  _______________ centrifuge is the most suitable for separation of non-friable crystals?
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MCQs:  Laminar flow region is said to exist during agitation of a liquid in an agitator, when the value of Reynolds number is________________?
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MCQs:   A _______________ employs a set of screen across a flow channel for the separation of dirt/rust from a flowing liquid stream?
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MCQs:  At low Reynold’s number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5: Power number Re = ρ N D2/μ: Reynold’s number N is the impeller rotational speed, and D is the impeller diameter ?
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MCQs:  The critical speed of a trommel (N) is related to its dia D. as _____________________?
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MCQs:  In screen analysis, the notation +5 mm/-10 mm means particles passing through ____________________?
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MCQs:  Cement clinker is reduced to fine size by a _____________________?
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MCQs:  Grinding efficiency of a ball mill is of the order of _______________ percent?
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MCQs:  Separation of isotopes is generally done using a/an _______________ centrifuge?
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MCQs:  Toothed roll crushers achieve size reduction by___________________?
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MCQs:  Agglomeration of individual particles into clusters (flocs) is called flocculation. To prevent flocculation, the most commonly used dispersing agents are________________?
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MCQs:  Capacity (in tons/hr) of jaw/gyratory crusher is equal to (where, L = length of the receiving opening, cm S = greater width of the discharge opening, cm) ?
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MCQs:  Mixing mechanism employed in a pan mixer is by ________________?
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MCQs:  Length/diameter ratio of a ball mill is __________________ ?
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MCQs:  Shell and leaf filter as compared to plate and frame filter _____________________?
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MCQs:  A propeller agitator_______________?
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