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Benzamide on treatment with POCl3 gives:

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Important Questions on Carbonyl Compounds and Carboxylic Acids

MEDIUM
An organic compound A upon reacting with NH3 gives B. On heating, B gives C. C in presence of KOH reacts with Br2 to give CH3CH2NH2. A is :
MEDIUM
The major product obtained in the reaction of aniline with acetic anhydride is
EASY

Acid strength given below the correct decreasing order will be :

EASY
In the presence of a small amount of phosphorous, aliphatic carboxylic acid reacts with chlorine or bromine to yield a reaction in which, α-hydrogen is been replaced by halogen. This reaction is known as
MEDIUM
α- chlorosodium acetate on boiling with aqueous sodium nitrite gives
MEDIUM
In the following reaction sequence, the correct structures of E, F and G are

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[*implies13C labelled carbon]
EASY
The correct structure of the product P in the following reaction is

Asn-Ser+(CH3CO)2O(excess)NEt3P
HARD
In the reaction,

CH 3 COOH LiAlH 4 A PCl 5 B Alc. KOH C ,

the product C is :
MEDIUM

The decreasing order of ease of alkaline hydrolysis for the following esters is
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HARD
List-I includes starting materials and reagents of selected chemical reactions. List-II gives structures of compounds that may be formed as intermediate products and/or final products from the reactions of List-I.
List-I List-II

(I)
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P
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(II)
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Q
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(III)
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R
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(IV)
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S
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T
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U
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Which of the following options has the correct combination considering List-I and List-II?
MEDIUM
Which one of the following esters gets hydrolyzed most easily under alkaline conditions?
HARD
With dehydrating agent present which dicarboxylic acid is least reactive towards forming an anhydride?
MEDIUM
Acetic anhydride reacts with diethyl ether in the presence of anhydrous AlCl3 to give