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Q. IUPAC name of the following compound is $\underset{\overset{|}{CN}}{C} H_{2}-\underset{\overset{|}{CN}}{C} H-\underset{\overset{|}{CN}}{C} H_{2}$

Haryana PMTHaryana PMT 2009

Solution:

$\underset{1,2,3−\text{tricyanopropane}}{\underset{\overset{|}{CN}}{C} H_{2}-\underset{\overset{|}{CN}}{C} H-\underset{\overset{|}{CN}}{C} H_{2}}$
[According to modem recommendations, if there are more than two same functional groups in a compound, they are not included in the main. Chain and their prefixes are used].