19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Oleic, stearic, palmitic acids are (BHU 2007)
CH3CO2C2H5 on reaction with sodium ethoxide in ethanol gives A, which on heating in the presence of acids gives B. Compound B is (AIIMS 2006)
Which reaction is used for the preparation of acetophenone ? (RPMT 2006)
Which reagent will bring about the conversion of carboxylic acids into esters
Heating a mixture of ethyl alcohol and acetic acid in presence of conc. H2SO4 produces a fruity smelling compound. This reaction is called
Two moles of acetic acid are heated with P2O5, The product formed is
An alkyl cyanide forms an amide when it is treated with
Acetyl chloride cannot be obtained by treating acetic acid with
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.
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)
Consider the acidity of the carboxylic acids : (i) C6H5COOH (ii) o–NO2C6H4COOH (iii) p–NO2C6H4COOH (iv) m–NO2C6H4COOH Which of the following order is correct ?
The strongest acid amongst the following compounds is
Among the following the strongest acid is
Which is false in case of carboxylic acids?