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JEE Advanced 2010Paper 2
Exam
JEE Advanced
Year
2010
Paper
Paper 2
Subject
Chemistry
Chapter
Alcohols Phenols and Ethers

JEE Advanced 2010 · Paper 2 · Chemistry · Alcohols Phenols and Ethers

Paragraph: Two aliphatic aldehydes P and Q react in the presence of...

Paragraph: Two aliphatic aldehydes P\mathrm{P} and Q\mathrm{Q} react in the presence of aqueous K2\mathrm{K}_2CO3\mathrm{CO}_3 to give compound R, which upon treatment with HCN provides compound S\mathrm{S}. On acidification and heating, S gives the product shown below :Paragraph: Two aliphatic aldehydes P and Q react in the presence of aqueous K_2 CO_3 to give compound R, which upon
Question: \text{ The compound } S \text{ is }

Options

  1. AMatch List-I with List-II regarding the radius of Bohr orbits for various hydrogen-like species, where a_0 is the Bohr
  2. BMatch List-I with List-II regarding the radius of Bohr orbits for various hydrogen-like species, where a_0 is the Bohr
  3. CMatch List-I with List-II regarding the radius of Bohr orbits for various hydrogen-like species, where a_0 is the Bohr
  4. DMatch List-I with List-II regarding the radius of Bohr orbits for various hydrogen-like species, where a_0 is the Bohr

Correct answer

D. Match List-I with List-II regarding the radius of Bohr orbits for various hydrogen-like species, where a_0 is the Bohr

Step-by-step solution

Paragraph: Two aliphatic aldehydes P and Q react in the presence of aqueous K_2 CO_3 to give compound R, which upon
Some inferences from above data - aq K2CO3a q \mathrm{~K}_2 \mathrm{CO}_3 can facilitate aldol condensation to aliphatic aldehydes. - HCN can lead to cyanohydrin formation - H+,Δ\mathrm{H}^{+}, \Delta can lead to hydrolysis of cyanide to acid and following esterification. So SS is cyanohydrin.Paragraph: Two aliphatic aldehydes P and Q react in the presence of aqueous K_2 CO_3 to give compound R, which upon
Carbonyl compounds (Aldol condensation) Conceptual reaction and mechanistic understanding IV
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