IUPAC Nomenclature Quiz

Name the following

In the bridged ring system, the common carbon atoms are called ________ carbon

atoms.

• fused
• linear
• cyclic
• bridged

When a particular site of a reactant undergoes a reaction in preference to similar

other sites, there is _________ in the reaction.

• chemoselectivity

• regioselectivity

• Both of these

• None

In mass spectrometry,sample molecules are bombarded by

• neutrons

• electrons

• protons

• gamma radiations

The region below 200 nm is called ----------

• VACUUM UV

• NEAR UV

• IR

• NMR

Biphenyl has a molecular formula ___________.

• (C4H5)2

• (C2H5)2

• (C6H11)2

• (C6H5)2

As per Rule 13 used in Mass Spectroscopy,total number of hydrogen atoms present

in a molecule is given by

A) n+r B) n+2r C) n+4r D)n-r

• n+2r

• n-r

• n+r

• n+4r

As per IUPAC system,the bridged bicyclic compounds are named using a _____

prefix .

• spiro

• biphenyls

• allene

• bicyclo

A peak in Mass Spectrum with highest intensity is

• MOLECULAR ION PEAK

• BASE PEAK

• BROAD PEAK

• ISOTOPIC PEAK

ABSORPTION SHIFTS TO LIONGER WAVELENGTH IS KNOEN AS

• HYPERCHROMIC

• HYPSOCHROMIC

• BATHOCHROMIC

• HYPSOCHROMIC