JEE Main 2018Chemistryp Block Elements (Group 13 & 14)HardMCQ

JEE Main 2018 — p Block Elements (Group 13 & 14) Question with Solution

JEE Main 2018 (08 Apr)

Question

When metal M is treated with NaOH, a white gelatinous precipitate X is obtained, which is soluble in excess of NaOH. Compound X when heated strongly gives an oxide which is used in chromatography as an adsorbent. The metal M is

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Show full solutionCorrect option: D
Correct answer
DAl

Step-by-step explanation

Alumina Al2O3 is used in chromatography

Al+NaOH→Al(OH)3(gelatinous)→NaOH(excess)[Al(OH)4]−(soluble)→ΔAl2O3

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About this question

This is a previous-year question from JEE Main 2018, covering the p Block Elements (Group 13 & 14) 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.