Chemical Engineering MCQs

Page No. 86

Titanium metal_________________?


aExists in three allotropic forms

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bCannot be welded

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cIs used in oceanographic and space exploration applications

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dNone of these

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Graphite is corroded by_________________?


aSulphuric acid (10%)

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bSea water

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cHydrochloric acid

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dNone of these

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View Answer None of these

Creep is not exhibited at low temperature by _____________________?


aRubber

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bAcrylics

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cLead

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dPlastics

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View Answer Lead

Babbitt metal (used for making bearings) comprises of__________________?


aMainly tin (85%) and lead

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bSaw dust and iron dust mixture

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cZinc and aluminium

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dCopper and aluminium

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Which of the following exercises most powerful influence on the mechanical properties of steel ?


aManganese

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bCarbon

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cPhosphorous

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dSilicon

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View Answer Carbon

Acid proof stoneware_________________?


aHas very low strength

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bCannot be heated

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cIs broken by small temperature changes

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dAll A., B. and C.

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View Answer All A., B. and C.

Light weight metallic alloy used in aircraft industry is________________?


aAluminium

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bHigh silicon (14%) iron

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cDuralumin

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dPhosphor bronze

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View Answer Duralumin

Which one contains the least percentage of carbon ?


aWrought iron

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bHigh speed steel

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cCast iron

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dPig iron

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View Answer Wrought iron

Ceramic materials are____________________?


aOrganic in nature

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bStronger in compression than in tension

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cAlways amorphous in nature

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dAlways bad heat conductors

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Plastics are____________________?


aUsed in very high temperature applications

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bNon-biodegradable

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cNot suitable for drainage pipe manufacture

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dAll A., B. & C.

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View Answer Non-biodegradable

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