Which of the following statement is correct?

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21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

Roasting is unnecessarily done for Fe extraction because there is no sulphide ore

In the smelting step of Cu extraction, reduction of the ore takes place

Ores may not be mineral

Sphalerite is the ore of zinc

answer is D.

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Detailed Solution

Sphalerite is an important ore of zinc; around 95% of all primary zinc is extracted from sphalerite ore.

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