JEE Main 2023 — S Block Elements Question with Solution
From: JEE Main 2023 (Online) 11th April Morning Shift
Question
Match List-I with List-II:
| List - I | List - II | ||
|---|---|---|---|
| A. | K | I. | Thermonuclear reactions |
| B. | KCl | II. | Fertilizer |
| C. | KOH | III. | Sodium potassium pump |
| D. | Li | IV. | Absorbent of CO |
Choose the correct answer from the options given below :
Choose an option
Show full solutionCorrect option: B
Step-by-step explanation
Let's consider each item in List-I and match it with an appropriate item from List-II:
A. K (Potassium): Potassium ions are crucial for the operation of the sodium-potassium pump in nerve cells. So, A matches with III.
B. KCl (Potassium Chloride): Potassium chloride is widely used in agriculture as a fertilizer. So, B matches with II.
C. KOH (Potassium Hydroxide): Potassium hydroxide is a strong base, but it is not typically used in a sodium-potassium pump, as a fertilizer, for thermonuclear reactions, or as a CO₂ absorbent. However, as per the given options and its closest possible use, KOH is often used to absorb CO₂ in certain applications like rebreathing gas masks. So, C matches with IV.
D. Li (Lithium): Lithium is used in thermonuclear reactions, specifically in fusion reactions. So, D matches with I.
Therefore, the correct option is Option B: A-III, B-II, C-IV, D-I.
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This is a previous-year question from JEE Main 2023, covering the S Block Elements chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.