JEE Main 2018 — Biomolecules Question with Solution
JEE Main 2018 (08 Apr)
Question
The predominant form of histamine present in human blood is
Choose an option
Show full solutionCorrect option: A
Correct answer
A

Step-by-step explanation
Structure of histamine

Blood is slightly basic in nature () approx. At this terminal will get protonated due to more basic nature.
Predominant structure of histamine is


Blood is slightly basic in nature () approx. At this terminal will get protonated due to more basic nature.
Predominant structure of histamine is

Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Biomolecules chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2018, covering the Biomolecules 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.