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Chemistry Model Test 2 (in Tamil)
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It's very useful for RPF RRB TNPSC competitive exam

Saravana Kumar is teaching live on Unacademy Plus

Saravana Kumar
# Founder of "Tamizha Academy" # l cleared TNTET # I have 7 years experience in competitive exams (TNPSC, TNTET, POLICE, ARMY, RRB)

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U
Unacademy user
Maam arent acyl,carboxylic,amide and aldehyde grps terminal fuctional grp (ie they are inly found at end of chain) then how in question 3 aldehyde is in middle of the chain....my sir told they are terminal fuctional groups so was curious
Ankita Chowdhury
2 years ago
yes they are Vatsaul. However this is an exception, as exceptions are always there in chemistry. Since we have a choice in Q3 to select either the chain containing our substituent aldehyde as the principle carbon chain, or the longest chain as our principle carbon chain, we will select the longest chain, and in that case the following prefix will be used as given in ans 3. This Q will help you understand where to use the prefix formyl and where to use prefix oxo. Hope this helps. happy learning!
Vatsaul Desai
2 years ago
ok got it...thx maam