JEE Main 2022 — s Block Elements Question with Solution
JEE Main 2022 (26 Jun Shift 2)
Question
s-block element which cannot be qualitatively confirmed by the flame test is
Choose an option
Show full solutionCorrect option: D
Correct answer
DBe
Step-by-step explanation
The electrons in beryllium and magnesium are too strongly bound to get excited by flame. Hence, these elements do not impart any colour to the flame. The flame test for Ca, Sr and Ba is helpful in their detection in qualitative analysis and estimation by flame photometry.
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This is a previous-year question from JEE Main 2022, 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.