Choose from the following list of substances, as to what matches the descriptions given below
Acetylene gas, aqua fortis coke, brass, barium chloride, bronze, platinum
A black powdery substance used for the
reduction of zinc oxide during its extraction.

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Solution

Coke
Coke is hard porous substance which has high carbon composition.
Coke is made from Coal which is an ore of carbon.
Coke is made in absence of air when coal is heated.
When the extraction of zinc takes place from its oxide (Zinc oxide) reduction of zinc oxide is done by coke. Hence, coke is the black powdery substance that is used for the reduction of zinc oxide during its extraction.
$Z n O + C \overset{C o k e}{\to} Zn + CO$

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Choose from the following list of substances, as to what matches the descriptions given below Acetylene gas, aqua fortis coke, brass, barium chloride, bronze, platinum A black powdery substance used for the reduction of zinc oxide during its extraction.

Choose from the following list of substances, as to what matches the descriptions given below
Acetylene gas, aqua fortis coke, brass, barium chloride, bronze, platinum
A black powdery substance used for the
reduction of zinc oxide during its extraction.