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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Suman Kumar
As you already know that IR spectroscopy is performed to know the functional groups present in the given molecule. Therefore, if you know which functional groups are present then you can make a guess if options are given to you. But, if you have isomers having same functional groups then it's quite difficult to interpret the molecule. Kindly accept my answer!
how can we predict
by learning values
Yes, you have to memorize corresponding frequencies.
All you need to have an educated guess that will help you.
ok
is it difficult
No if you practice enough then you can memorize some of them.