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JEE Main 20188 April
Exam
JEE Main
Year
2018
Date
8 April
Subject
Chemistry
Chapter
Biomolecules

JEE Main 2018 · 8 April · Chemistry · Biomolecules

The predominant form of histamine present in human blood is ( pK _...

The predominant form of histamine present in human blood is (pKa,Histidine=60)\left({pK}_{a}, Histidine = 60\right)The predominant form of histamine present in human blood is ( pK _ a , Histidine = 60)The predominant form of histamine present in human blood is ( pK _ a , Histidine = 60)The predominant form of histamine present in human blood is ( pK _ a , Histidine = 60)The predominant form of histamine present in human blood is ( pK _ a , Histidine = 60)The predominant form of histamine present in human blood is ( pK _ a , Histidine = 60)The predominant form of histamine present in human blood is ( pK _ a , Histidine = 60)

Options

  1. AWhat is the energy of a photon in a monochromatic light beam produced by a laser with a frequency of 6.0 × 10 14 Hz and
  2. BWhat is the energy of a photon in a monochromatic light beam produced by a laser with a frequency of 6.0 × 10 14 Hz and
  3. CWhat is the energy of a photon in a monochromatic light beam produced by a laser with a frequency of 6.0 × 10 14 Hz and
  4. DWhat is the energy of a photon in a monochromatic light beam produced by a laser with a frequency of 6.0 × 10 14 Hz and

Correct answer

A. What is the energy of a photon in a monochromatic light beam produced by a laser with a frequency of 6.0 × 10 14 Hz and

Step-by-step solution

Structure of histamine
The predominant form of histamine present in human blood is ( pK _ a , Histidine = 60)

Blood is slightly basic in nature (pH=7.35pH = 7 . 35) approx. At this pHpHterminal NH2{NH}_{2} will get protonated due to more basic nature.
∴∴ Predominant structure of histamine is

The predominant form of histamine present in human blood is ( pK _ a , Histidine = 60)
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