1. Which one of the following compounds has a ?max in its UV-visible spectrum wi

Question

1. Which one of the following compounds has a ?max in its UV-visible spectrum with the longest wavelength?
a.) (4E,7E)-dodeca-1,4,7-triene
b.) (2E,4E,6E)-dodeca-2,4,6-triene
c.) (2E,4E,10E)-dodeca-2,4,10-triene
d.) (E)-dodeca-1,5,11-triene
e.) (2E,6E,8E)-dodeca-2,6,8-triene

2. What is the splitting pattern expected for the protons in the molecule CH3CH2-O-CH3?
a.) singlet
b.) doublet
c.) triplet
d.) quartet
e.) nonet (9 peaks)

3. Which of the following compounds has the highest melting point?
a.) bromobenzene
b.) 1,2,4-trifluorobenzene
c.) p-dibromobenzene
d.) m-dibromobenzene
e.) o-dibromobenzene

Explanation / Answer

1. Which one of the following compounds has a ?max in its UV-visible spectrum with the longest wavelength? d.) (E)-dodeca-1,5,11-triene 2. What is the splitting pattern expected for the protons in the molecule CH3CH2-O-CH3? a.) singlet 3. Which of the following compounds has the highest melting point? b.) 1,2,4-trifluorobenzene

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