HARD
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o-amino benzaldehyde is heated along with acetone in dilute NaOH solution to produce the major organic product A, which on treatment with catalytic amount of H2SO4, produces another major organic product B formed via intramolecular reaction. Let, the degree of unsaturation of A be x, the degree of unsaturation of B be y, the number of rings in (A) be z and the number of rings in (B) be p, then, find the value of  x.y z.p 

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Important Questions on Aldehydes, Ketones and Carboxylic Acids

HARD
In the following reaction sequence, the amount of D (in g) formed from 10 moles of acetophenone is ____.

(Atomic weights in mol-1: H=1,C=12,N=14,O=16,Br=80.  The yield (%) corresponding to the product in each step is given in the parenthesis)

Question Image
MEDIUM

The increasing order of the reactivity of the following with LiAlH4 is:

(A) Question Image

(B) Question Image

(C) Question Image

(D) Question Image

HARD
The test performed on compound x and their inferences are:
 
Test Inference
a 2, 4 - DNP test Coloured precipitate yellow
b Iodoform test Yellow precipitate
c Azo-dye test No dye formation

Compound x is:

HARD
Treatment of cyclopentanone  Question Image with methyl lithium gives which of the following species?
EASY
In the following reaction
Aldehyde+AlcoholHClAcetal
Aldehyde  Alcohol
HCHO t-BuOH
CH3CHO  MeOH
The best combination is:
EASY
Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:
EASY
The product formed by the reaction of an aldehyde with a primary amine is:
HARD
In the reaction sequence

2CH3CHO OH- A  B ; the product B is:
MEDIUM
The major product B formed in the following reaction sequence is:

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EASY
An organic compound 'X' having molecular formula C5H10O yields phenyl hydrazone and gives negative response to the iodoform test and Tollen's test. It produces n-pentane on reduction. 'X' could be:
MEDIUM
Which of the following reagents would distinguish cis-cyclopenta-1, 2-diol from the trans-isomer?