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Previous Year Questions -9 (in Hindi)
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This lesson covers previous year Question

Abhishek mittal
Star educator and verified educator | Organic chemistry matter expert | Motivator

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Ab
Abe chutiye tat ka kyu bta rha hai, ppdt me bs ek picture Hoti hai , bacho Ko galat Bata rha hai , fact clear kr apna!
answer will be 3rd bcz 1st aur 3rd me 3 resonating structures each h + sp2 hybridized carbon but in 3rd och3 is showing +M effect which will destabilize O- so 1>3 and 2nd has just 2 resonating structures so 1>3>2
lasts question answer Will be (3) as 1 and 2 shows resonance with sp2, 2nd doesn't have resonance so comparing 1and 3, 3rd one has +m effect too so it decreases acidic strength
sorry I meant answer is 1
sir last question ka answer 1 hoga bcoz 1 option sp2 hai or 2nd option mai +I lagaiga or vo sp3 bhi hai 3rd option sp2 hai lakin usmai +R effect lagaiga ir sir moe s character are acidic
Abhishek mittal
a year ago
answer will be 3...
jackpot qus ka ans..3rd hona chahiye bcoz 1st option reso ho rha h 3rd option m -i hoga wid reso nd 2nd m +i lgega
Abhishek mittal
a year ago
answer is 1st ..... and before asking me the solution i will suggest you to put whole energy into it....bcoz i gave that question for you to improve your analytical power....so first work upon it
more S character are more acidic
Abhishek mittal
a year ago
yes
  1. e correct statement regarding a carbonyl compound with a hydrogen atom on its alpha carbon,is :- (1) a carbonyl compound with a hydrogen atom on its alpha-carbon never equilibrates with its corresponding enol (2) a carbonyl compound with a hydrgen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as aldehyde-ketone equilibratiorn (3) a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as carbonylation (4) a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as keto-enol tautomerismm


  2. 2 NEET-L a Carbonyl compdatom on is -C and ts process fs kla keho enol futomensm


  3. pyrrole 4 5 The electron density is maximum on :- (1) 2 and 4 (3),2 and 3 (2) 2 and5 (4) 3 and 4


  4. 3 1 An ..4..ea.be..P Maximm e d at 2 s- &TV anu more stable than 5b major donh buhon hone bafh


  5. Arrange following compounds in their acidic strength order :- ck pot CH2-CH-C-OH CH3-CH2-C-OH CH,0-CH=CH-C-OH (1)I> II > III