JEE Main 2019Chemistryp Block Elements (Group 15, 16, 17 & 18)EasyMCQ

JEE Main 2019p Block Elements (Group 15, 16, 17 & 18) Question with Solution

JEE Main 2019 (10 Jan Shift 2)

Question

Among the following reactions of hydrogen with halogens, the one that requires a catalyst is:

Choose an option

Show full solutionCorrect option: B
Correct answer
BH2+I22 HI

Step-by-step explanation

I2 is the least reactive halogen. So, its reaction with H2 requires a catalyst.

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About this question

This is a previous-year question from JEE Main 2019, covering the p Block Elements (Group 15, 16, 17 & 18) 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.