CBSE
Multiple Choice QuestionsWhich of the following is crossed aldol product in the reaction?
CH3CHO + CH3CH2CHO 'P'
Consider the following compounds
Cl3C - COOH Br3C - COOH I3C - COOH
(I) (II) (III)
The decreasing order of decarboxylation is
I > II > III
III > II > I
III > I > II
II > I > III
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their
Formation of intramolecular H-bonding
Formation of intermolecular H-bonding
Formation of intermolecular H-bonding
More extensive association of carboxylic acid via Vander Waals force of attraction
The compound (A) is
C2H5Cl
C2H5ONa
CH2N2
CH3ONa
The product of acid hydrolysis of (P) and (Q) can be distinguished by
Lucas reagent
2,4-DNP
Fehling's solution
NaHSO3
Consider the reactions :
A-Methoxymethane, X-Ethanoic acid, Y-Acetate ion, Z-hydrazine
A-Methoxymethane, X-Ethanol, Y-Ethanoic acid, Z-Semicarbazide
A-Ethanal, X-Ethanol, Y-But-2-enal, Z-Semicarbazone
A-Ethanal, X-Ethanol, Y-But-2-enal, Z-Semicarbazone
Clemmensen reaction of the ketone is carried out in the presence of
LiAlH4
Zn-Hg with HCl
glycol with KOH
H2 with Pt as a catalyst
The IUPAC name of the compound
3-keto-2-methylhex-4-enal
5-formylhex-2-en-3-one
5-methyl-4-oxohex-2-en-5-al
5-methyl-4-oxohex-2-en-5-al
Cannizzaro reaction is not shown by
CH3CHO
HCHO
Compound A, C8H10O, is found to react with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with characteristic smell. A and Y are respectively
