Extraction of Metals — MCQ Practice
Interactive MCQ Practice
Test your knowledge. Click “Solve” to reveal options, select your answer, then check the result. 5 questions available.
Which of the following statements regarding the Ellingham diagram is/are correct? 1. A metal can reduce the oxide of another metal if its ΔG° line lies above the other metal's oxide line at a given temperature. 2. The slope of the ΔG° vs. T line for the formation of a metal oxide from solid metal and gaseous oxygen is generally positive. 3. Carbon monoxide (CO) is an effective reducing agent for iron oxides at lower temperatures in a blast furnace.
Consider the following processes used in metal extraction: 1. Froth Flotation 2. Leaching (Bayer's Process) 3. Electrolytic Refining Which of the above processes are primarily used for the concentration or purification of copper sulfide ores?
Which of the following statements correctly describes the role of limestone in the blast furnace during iron extraction?
Consider the following statements about modern metal extraction technologies: 1. Bioleaching utilizes microorganisms to convert insoluble metal sulfides into soluble forms. 2. Solvent extraction is primarily used for the purification of highly reactive metals like aluminum. 3. Green hydrogen in steel production aims to replace coke as a reducing agent to reduce carbon emissions. Which of the statements given above are correct?
Which of the following metals is/are typically extracted using an electrometallurgical process? 1. Iron 2. Aluminum 3. Copper (for refining) 4. Zinc