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Home Questions 4M9Q6573VQ
Target Exam

CUET

Subject

General Test

Chapter

General Knowledge

Topic

Chemistry

Question:

Match List I and List II 

List I

Element

List II

Method of extraction
1. Sodium  A. Found in free state
2. Iron  B. Electrolysis
3. Silver  C. Reduction using carbon
Options:

1-A; 2-B; 3-C

1-B; 2-C; 3-A

1-B; 2-A; 3-C

1-A; 2-C; 3-B

Correct Answer:

1-B; 2-C; 3-A

Explanation:

The correct answer is option 2. 1-B; 2-C; 3-A

The metals at the bottom of the activity series are the least reactive. They are often found in a free state. For example, gold, silver, platinum and copper are found in the free state. The metals at the top of the activity series (K, Na, Ca, Mg and Al) are so reactive that they are never found in nature as free elements. These are extracted using electrolysis. The metals in the middle of the activity series (Zn, Fe, Pb, etc.) are moderately reactive. They are found in the earth’s crust mainly as oxides, sulphides or carbonates, and are extracted by reduction with carbon. 

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