This set of Chemical Industry Multiple Choice Questions & Answers (MCQs) focuses on “Copper”.
1. Which among the following is an ore of copper?
a) Hematite
b) Magnetite
c) Chalcopyrite
d) Siderite
View Answer
Answer: c
Explanation: The predominant ore of copper is chalcopyrite (CuFeS2). Hematite, magnetite and siderite are ores of iron.
Explanation: The predominant ore of copper is chalcopyrite (CuFeS2). Hematite, magnetite and siderite are ores of iron.
2. Which method is used to extract copper from sulphide ores?
a) Froth floatation
b) Leaching
c) Screening
d) Mechanical agitation
View Answer
Answer: a
Explanation: In froth floatation process, the ore is added to water and other reagents and is mechanically agitated forming bubbles. As the bubble rises it carries the copper along.
Explanation: In froth floatation process, the ore is added to water and other reagents and is mechanically agitated forming bubbles. As the bubble rises it carries the copper along.
3. What are the steps involved in purifying copper? (In order of precedence)
a) Smelting-Roasting-Converting
b) Smelting-Converting-Roasting
c) Converting-Roasting-Smelting
d) Roasting-Smelting-Converting
View Answer
Answer: d
Explanation: Water is first removed by roasting. Steamed air is sent in to remove the volatile impurities. The final is conversion of matte.
Explanation: Water is first removed by roasting. Steamed air is sent in to remove the volatile impurities. The final is conversion of matte.
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Sanfoundry Global Education & Learning Series – Chemical Industry.
To practice all areas of Chemical Industry, here is complete set of 1000+ Multiple Choice Questions and Answers.
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