19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Direct attachment of groups such as phenyl or vinyl to the carboxylic acid, increases the acidity of corresponding carboxylic acid because
Diborane easily reduce the functional group such as
The product formed during Hell-Volhard-Zelinsky reaction is (a) R CH COOH | X (b) R CH COX (c) X | R C COOH | X (d) R CH CH COOH | X
Select the incorrect match.
Aluminium chloride gets bonded to the carboxyl group. Identify ‘X’ and ‘Y’ for the above reaction. (a) (b) (c) (d) Ans. (d) Sol.
Which of the – COOH is lost during heating?
Alkali metal salts of carboxylic acids also undergo decarboxylation on electrolysis of their aqueous solutions and form hydrocarbons having twice the number of carbon atoms present in the alkyl group of the acid. The …
Why the aromatic carboxylic acids do not undergo Friedel-Crafts reaction?
Arrange the following acids in the decreasing order of the acidic strength. HC C COOH I ,C H COOH II , CH CH COOH III ,CH COOH IV Choose the correct option.
In a set of the given reactions, acetic acid yields a product C. CH COOH PCl A -> C H C H MgBr Anh.AlCl Ether A B C -> -> Product C would be (a) CH CH OH C H (b) C H | CH C OH C H (c) CH CH OH C H (d) CH COC H
Name the end product in the following series of reactions Carboxylic Acid and Its Derivatives NH P O CH COOH A B -> ->
Propionic acid and KOH reacts to produce which one of the following?
In the anion HCOO– the two carbon-oxygen bonds are found to be of equal length. What is the reason for it?
In the reaction, PCl LiAlH alc.KOH CH COOH A B C -> -> -> the product C is :
SOCl LiAlH CH CH COOH A -> -> CH OH | CH OH B C -> is (a)
Benzoic acid with Ba(OH)2 gives
Sulphonation of benzoic acid produces mainly
The yield of ester in esterification can be increased by CH3CH2OH + CH3COOH ⇋ CH3COOCH2CH3 + H2O
CH3Br can be prepared by (a) CH COOAg Br -> (b) P/Br sodalime, CH COOH ->->
(a) (b) (c)
An optically active compound ‘X’ has molecular formula C4H8O3. It evolves CO2 with aq. NaHCO3. ‘X’ reacts with LiAlH4 to give an achiral compound. ‘X’ is (a) (b) (c) (d)
Benzoic acid gives benzene on being heated with X and phenol gives benzene on being heated with Y. Therefore X and Y are respectively
Which of the following undergoes hydrolysis when dissolved in water
Silver benzoate reacts with bromine to form (a) (b) (c) (d)
What will be the product, when carboxy phenol, obtained by Reimer-Tiemann’s process, is deoxidised with Zn-powder? (a) (b) (a) (b) (c) (d)