chemical engineering MCQs – Page 359

Practise multiple-choice questions from chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering Mcqs

7161. Which is an amorphous material ?
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A. Glass

B. Brass

C. Cast iron

D. Mica

7162. Gas holder of a gobar (cow-dung) gas plant is made of___________________?
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A. Aluminium

B. Molybdenum stainless steel

C. Mild steel

D. Tin

7163. Acid proof stoneware_________________?
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A. All A., B. and C.

B. Has very low strength

C. Is broken by small temperature changes

D. Cannot be heated

7164. Ball bearings are generally made of___________________?
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A. Stainless steel

B. Plain carbon steel

C. Chrome carbon steel

D. Malleable cast iron

7165. An alloy of iron containing 4% carbon is called________________?
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A. None of these

B. High carbon steel

C. Wrought iron

D. Mild steel

7166. Wood metal is not used for making___________________?
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A. Storage tank for storing brine and caustic soda

B. Soft solder

C. Casting for dental work

D. Fusible safety plug for pressure cooker

7167. Nitriding of steel is done (in electric furnace) at _____________ C?
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A. 2210

B. 510

C. 1720

D. 910

7168. 100% H2SO4 at 30C cant be stored in a vessel made/lined with ___________________?
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A. Teflon, glass and porcelain

B. Cast iron and high silicon iron

C. Mild steel and stainless steel

D. Aluminium, tin and rubber

7169. Presence of high amount of silicon in cast iron________________?
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A. Suppresses the decomposition of Fe3C

B. Reduces its fluidity

C. Increases the contraction of the metal

D. Increases the formation of graphite

7170. The loss of strength in compression which occurs, when there is a gain of strength in tension due to over loading is called__________________?
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A. Bauschinger effect

B. Hysteresis

C. Relaxation

D. Hookes effect

7171. Wrought iron is ____________________?
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A. An alloy of iron, chromium & carbon

B. High carbon iron

C. Malleable & ductile; and hence is used for chain links, hooks & couplings

D. Highly resistance to acid corrosion

7172. Trough of an apron conveyor is made of___________________?
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A. Metal

B. Lead lined concrete vessel

C. Either B. or C.

D. Wood

7173. Titanium metal_________________?
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A. Exists in three allotropic forms

B. Cannot be welded

C. Is used in oceanographic and space exploration applications

D. None of these

7174. Austenitic manganese steel used for making jaws of crushing machines contains about ______________ percent manganese?
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A. 3.5-4.5

B. 12-14

C. 9-Jul

D. 1.5-2

7175. The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability ?
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A. Aluminium

B. Wrought iron

C. Lead

D. Copper

7176. Concentrated HCl at 30C can be stored in a vessel made of ________________________?
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A. Cast iron and aluminium

B. None of these

C. PTFE and porcelain

D. Stainless steel and high silicon cast iron

7177. _____________ is used for examining the macro-structure of a material?
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A. Optical microscope

B. X-rays

C. Metallurgical microscope

D. Visual inspection by naked eye

7178. Brass is an alloy of____________________?
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A. Copper and zinc

B. Nickel and tin

C. Tin and lead

D. Copper, nickel and zinc

7179. Carbon percentage is the same in cast iron and_________________?
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A. High silicon (14%) iron

B. Pig iron

C. Wrought iron

D. Mild steel

7180. Ammonium chloride solution is stored/ treated in _____________ vessels/pipes?
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A. Stainless steel

B. Lead

C. Rubber or durmet-20 lined

D. Plain carbon steel

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