chemical engineering MCQs – Page 361

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 Review each marked answer and report any item that may be outdated or unclear.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

7201. German silver used for decorative purposes contains maximum percentage of___________________?
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A. Nickel

B. Copper

C. Silver

D. Zinc

7202. An ideal material of construction for the storage of 50% caustic soda solution would be___________________?
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A. High silicon cast iron

B. Karbate

C. Monel

D. None of these

7203. A bearing metal should not have___________________?
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A. Low co-efficient of friction

B. Enough plasticity

C. High toughness

D. Low thermal conductivity

7204. Plastics are____________________?
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A. Non-biodegradable

B. Not suitable for drainage pipe manufacture

C. All A., B. & C.

D. Used in very high temperature applications

7205. Work hardening of a material ________________?
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A. Decreases its tensile strength

B. Increases its ductility

C. Does not affect its ductility

D. Decreases its ductility

7206. Nickel (56%) and molybdenum (17%) alloys are called________________?
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A. Hastelloy C

B. Bronzes

C. Monel

D. Inconel

7207. Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysteresis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%) ?
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A. Induction motors

B. Generators and small motors

C. High frequency transformers

D. Armature of small motors/generators

7208. A chemical change takes place when iron_____________?
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A. Rusts

B. None of these

C. Is heated

D. Melts

7209. Common house hold glass (i.e., soda-lime glass) is a/an _____________ material?
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A. Fully crystalline

B. Amorphous

C. None of these

D. Partly crystalline

7210. The fermenter used in the production of penicillin (by deep fermentation process) is made of___________________?
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A. High silicon cast iron

B. Porcelain

C. Glass lined steel

D. Glass

7211. Constantan used in thermocouples is an alloy of___________________?
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A. Copper & aluminium

B. Lead & tin

C. Iron & copper

D. None of these

7212. Tin vessels are corroded by____________________?
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A. None of these

B. Anhydrous ammonia

C. Synthetic detergent solution

D. Aromatic solvents

7213. Dead mild steel, which contains 0.10 to 0.15 percent carbon is used for making________________?
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A. Shear blades

B. Flanges

C. Gears

D. Shafts

7214. The bomb in the bomb calorimeter is made of___________________?
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A. Mild steel

B. High silicon iron (14% Si)

C. Molybdenum stainless steel

D. Copper

7215. Constituents of stellite are__________________?
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A. Zinc, aluminium and nickel

B. Nickel, cobalt and vanadium

C. Cobalt, chromium and tungsten

D. Zinc, copper and nickel

7216. Ceramic materials fabrication cannot be done by__________________?
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A. Slip casting

B. Extrusion

C. Welding

D. Plastic pressing

7217. Which of the following undergoes granular fracture ?
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A. Wrought iron

B. Steel

C. None of these

D. Cast iron

7218. Which of the following is not an alloy of tin ?
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A. Soft solder

B. Pewter type metal

C. White-bearing metal

D. German silver

7219. Which of the following has the poorest weldability ?
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A. Mild steel

B. Wrought iron

C. Low carbon steel

D. High-carbon steel

7220. In a plate type heat exchanger, heat transfer plates are never made of _________________?
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A. Hastelloy C

B. Stainless steel

C. Titanium

D. Cast iron

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