Pick out the wrong statement.
A. In Parke's process, zinc is added to remove silver from lead
B. In the Pidgeon process of producing magnesium, powdered ferro-silcon is used as the reducing agent
C. Molten lead is used for shock cooling of the zinc vapours in the zinc blast furnace
D. Pure copper electrodes are used as anode for electro-refinning of copper
Answer: Option D
This Question Belongs to Chemical Engineering >> Chemical Engineering Basics
Which of the following will resist maxi-mum shock & vibration without cracking?
A. Grey cast iron
B. White cast iron
C. Malleable iron
D. Graphite
A. Pulverised fuel
B. Travelling grate stoker firing
C. Circulating fluidised bed
D. Fluidised bed
Isotropic materials have the same __________ in all directions.
A. Induced stresses
B. Density
C. Elastic properties
D. Thermal properties
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