JEE Main 2023 — S Block Elements Question with Solution
From: JEE Main 2023 (Online) 13th April Evening Shift
Question
Better method for preparation of , among the following is :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
According to the NCERT (s block) textbook, the better method for the preparation of BeF₂ is heating (NH₄)₂BeF₄.
Option B :
This method involves the thermal decomposition of ammonium beryllium fluoride ((NH₄)₂BeF₄) to form beryllium fluoride (BeF₂) and ammonium fluoride (NH₄F). The reaction is more efficient compared to other options and results in a purer product.
Option B :
This method involves the thermal decomposition of ammonium beryllium fluoride ((NH₄)₂BeF₄) to form beryllium fluoride (BeF₂) and ammonium fluoride (NH₄F). The reaction is more efficient compared to other options and results in a purer product.
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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.