chemical engineering MCQs – Page 357

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 Review each marked answer and report any item that may be outdated or unclear.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

7121. Out of the following, copper vessels are the most suitable for the storage of__________________?
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A. Phosphoric acid (95%) & sulphuric acid (95% and fuming)

B. Dry chlorine & dry fluorine

C. Bromine

D. Nitric acid (95% and fuming)

7122. Copper is dissolved from its ore by H2SO4 in a percolation tank made of_________________?
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A. Wood

B. High silicon iron (14% Si)

C. Reinforced concrete lined with lead

D. Stainless steel

7123. Acetaldehyde is produced by hydration of acetylene in a sulphuric acid solution of mercuric sulphate. Hydration tower is made of___________________?
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A. Rubber lined mild steel

B. Cast iron

C. Aluminium

D. Lead lined mild steel

7124. Glass lined vessels are not used for handling/storing__________________?
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A. Dilute HCl

B. Dilute H2SO4

C. Hydrofluoric acid

D. Dilute HNO3

7125. Galvanised iron is___________________?
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A. None of these

B. Harder

C. Protected from rusting

D. Alumina coated iron

7126. Maximum consumption of copper is in__________________?
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A. Small scale industries

B. Industrial equipment manufacture

C. Electrical industry

D. Utensil manufacture

7127. The heat treatment process applied to cold formed steel parts is ____________________?
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A. Artificial ageing

B. Tempering

C. Normalising

D. Solution annealing

7128. A material is called ductile, if it can be__________________?
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A. Made lustrous by heating it

B. Drawn into wires

C. Hammered to a thin sheet

D. Fractured without deformation

7129. White metal is an alloy of___________________?
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A. Lead, tin and cadmium

B. Copper and lead

C. Copper, tin and zinc

D. None of these

7130. Addition of ______________ in steel is helpful in increasing the depth of hardness?
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A. Tungsten

B. Chromium

C. Sulphur

D. Vanadium

7131. Acetylene gas holder is made of__________________?
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A. Cast iron

B. Steel

C. Monel metal

D. Copper

7132. Addition of ______________ to the steel helps in increasing the residual magnetism in steel used for making magnets?
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A. Tungsten

B. Cobalt

C. Chromium

D. Nickel

7133. Percentage of silver in German silver is__________________?
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A. 0

B. 5

C. 20

D. 10

7134. Rotary driers are generally made of_______________?
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A. Cast iron

B. Tin lined with refractory bricks

C. Mild steel

D. High silicon iron (14% Si)

7135. In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of _______________?
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A. Porcelain

B. Steel

C. Wood

D. Concrete

7136. The ability of a material to offer resistance to scratching or indentation is a measure of its_________________?
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A. Toughness

B. Hardness

C. Resilience

D. Brittleness

7137. The phenomenon in which slow extension of material takes place with the time at constant load is called________________?
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A. Creep

B. Ductility

C. Elasticity

D. Plasticity

7138. Addition of 2% nickel in steel makes it suitable for making ___________________?
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A. Connecting rod

B. Electronic valves

C. Boiler plates, rivets etc.

D. Turbine blades

7139. Mild steel is ___________________?
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A. A low carbon steel (0.05 to 0.3% carbon)

B. A high carbon steel (0.5 to 1.5% carbon)

C. Highly resistant to corrosion (as much as stainless steel)

D. Very poor in strength & ductility

7140. Cast iron is a ______________ material?
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A. Tough

B. Brittle

C. Ductile

D. Malleable

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