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MCQ on IR spectroscopy: Page-3

Recognizable molecular ions are formed in

Aldehydes

(B) Halides

(C) Ketones

(D) Nitriles

Ketones >amines> esters> ethers> carboxylic acids, aldehydes, amides, halides

Not detectable in

Aliphatic Alcohols, Nitriles, Nitrites, Nitrates, Nitro, Highly branched HC

All of the following are monoisotropic EXCEPT

(A) F

(B) P

(C) N

(D) I

Exact masses of the nuclides are

(A) Whole numbers

(B) Integers

(C) Both

The fragmentation of saturated rings containing alkyl chain takes place at

(A) α bond

(B) β bond

(C) γ bond

(D) δ bond

Identify the most probable bond that undergoes fragmentation in the following compound in Mass spectroscopy img

(A) α bond

(B) β bond

(C) Ring opening

(D) Both at α and β bond