Choose the Best Answer · Q18
Q.Which of the following is used for concentrating ore in metallurgy?
a) Leaching
b) Roasting
c) Froth floatation
d) Both
(a) and (c)
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Start your 14-day free trial to unlock the full solution →Step 1. Section 1.2 lists leaching (1.2.3) and froth flotation (1.2.2) as two of the methods used to CONCENTRATE an ore, i.e. remove gangue before any chemical conversion begins.
Step 2. Roasting (b), by contrast, belongs to Section 1.3.1 -- it is the first step of EXTRACTION (converting an already-concentrated sulphide ore into its oxide), not a concentration method; concentration has already happened before roasting is applied. …
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