chemical engineering MCQs – Page 353

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 Review each marked answer and report any item that may be outdated or unclear.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
7041. Gunmetal and bronze are not corroded by the action of__________________?
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A. Synthetic detergent solution

B. Nitric acid (< 25%)

C. Wet chlorine

D. Hydrochloric acid (10%)

7042. A material is able to retain the deformation permanently by virtue of its___________________?
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A. Ductility

B. Plasticity

C. Elasticity

D. Malleability

7043. Water gas generator is made of__________________?
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A. High carbon steel-porcelain lined

B. Cast iron

C. Carbon steel-brick lined

D. Stainless steel-lead lined

7044. Which of the following stainless steels is non-magnetic ?
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A. Austenitic

B. None of these

C. Ferritic

D. Martenistic

7045. Creep is not exhibited at low temperature by _____________________?
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A. Rubber

B. Plastics

C. Acrylics

D. Lead
7046. Hot working of lead is carried out at_________________?
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A. 150 C

B. 373 K

C. Room temperature

D. 75 C

7047. 18-4-1 high speed steel contains 18%, 4% and 1% respectively of____________________?
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A. Tungsten, vanadium and chromium

B. Vanadium, chromium and tungsten

C. Tungsten, chromium and vanadium

D. Chromium, tungsten and vanadium

7048. The material of construction of pressure mills used for squeezing out the juice from sugar cane is__________________?
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A. Monel

B. Stainless steel

C. Mild steel

D. Cast iron
7049. Which of the following exercises most powerful influence on the mechanical properties of steel ?
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A. Carbon

B. Silicon

C. Phosphorous

D. Manganese

7050. In order to be called steel, an alloy should have iron percentage greater than____________________?
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A. 80

B. 50

C. 90

D. 70

7051. Bronze is an alloy of copper and _________________?
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A. Zinc

B. Tin

C. Nickel

D. Lead

7052. The carbonating tower used in Solvay process of soda ash manufacture is made of_________________?
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A. Stainless steel

B. Cast iron

C. Karbate

D. Lead lined steel

7053. Hardest materials so far found is_________________?
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A. Diamond

B. Pumice stone

C. Carborundum

D. Graphite

7054. Heavy duty bearings are usually made of___________________?
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A. White metal

B. Zinc

C. Phosphorous bronze

D. Monel

7055. Light weight metallic alloy used in aircraft industry is________________?
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A. High silicon (14%) iron

B. Phosphor bronze

C. Aluminium

D. Duralumin
7056. Which of the following is the hardest _______________?
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A. Ferrite

B. Austenite

C. Cementite

D. Pearlite

7057. Photographic plates are coated with_________________?
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A. Calcium silicate

B. Silver nitrate

C. Silver halide

D. Metallic silver

7058. Which of the following is the most elastic material ?
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A. Glass

B. Rubber

C. Steel

D. Plastic

7059. For spinning viscose rayon, the extrusion spinnerettes are made of ___________________?
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A. Platinum or gold alloys

B. High carbon steel

C. Nickel

D. Aluminium

7060. The process of coating steel sheets by zinc to improve its corrosion resistance is called___________________?
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A. Galvanising

B. Tempering

C. Zincification

D. Calorising