aldehydes

Question 1

mesitylene

Answer 1

benzene ring with 3methyls at ortho para positions

Question 2

RNH2 + carbonyl

Answer 2

Schiff’s base

substituted imine

Question 3

Formalin composition

Answer 3

40% formaldehyde

Question 4

Partial hydrolysis of cyanides

Answer 4

Amide

Question 5

Hydrolysis of acyl chloride

Answer 5

Acid

Question 6

Stability of alkenes

Answer 6

same grp same side > trans >cis

Question 7

Heat of hydrogenation and stability

Answer 7

Inversely

Question 8

Heat of combustion and branching

Answer 8

inversely

Question 9

Heat of combustion and stability of alkene

Answer 9

Inversely

Question 10

basicity order pyridine pyrolle aniline

Answer 10

pyridine>aniline>pyrolle

Question 11

Keto enol tautomerism condition

Answer 11

Next to carbonyl there has to be an sp3 carbon that has at least one H atom

Question 12

Keto more stable than enol. But exceptions

Answer 12

conjugation
aromaticity
intramolecular H bonding

Question 13

non zero dipole moment example

Answer 13

quinol, 1,4benzene dicarboxylic acid

Question 14

No of optical isomers

Answer 14

Unsymmetric: 2^n
Symmetric: 2^n-1 + 2^p-1

p = (n+1)/2 or n/2

Question 15

Which product can undergo racemisation

Answer 15

The one that is chiral