Which of the following statements is/are correct regarding the extraction of metals? I. Highly reactive metals (like sodium and p…
General Science ·Previously asked in JKSSB Laboratory Attendant 2026
View the full solved paper: JKSSB Laboratory Attendant – 10 May 2026
Question
Which of the following statements is/are correct regarding the extraction of metals?
I. Highly reactive metals (like sodium and potassium) are extracted by electrolysis.
II. Moderately reactive metals (zinc, iron, lead) are extracted by reduction using carbon or CO.
III. Less reactive metals (copper, mercury) can be obtained simply by heating ores.
- A. Only II
- B. Only I and III
- C. Only II and III
- D. All of the above (Correct answer)
Correct Answer
Option D — All of the above
Detailed Solution & Explanation
The correct answer is All of the above.
Key Points
- All three methods are correct as per the activity series: electrolysis for highly reactive, carbon reduction for moderately reactive, and simple heating for less reactive metals.
Topics covered: Chemistry Metallurgy