Assertion : (CH3)3CCOOH does not give HVZ reaction.
Reason: (CH3)3CCOOH does not have -hydrogen atom.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Which of the following compounds is resistant to nucleophilic attack by hydroxyl ion ?
Methylacetate
Acetonitrile
Acetamide
Diethyl ether
Aldehyde which is formed during photosynthesis of plants is :
methanal
acetaldehyde
propanal
phenylmethanal
CH3CHO + CH3CHO CH3CH(OH)CH2CHO , the intermediate in the above reaction is :
carbanion
carbonium ion
carbene
None of these
What is the product B in the following reaction sequence ?
CH3--CH3 A B
(CH3)2-C(OH)-COOH
(CH3)2-C(OH)-CH2NH2
(CH3)2-CH-CN
CH3COOC2H5 with excess of C2H5MgBr and hydrolysis gives :
C2H5-C(CH3)=O
(C2H5)2-C(CH3)-OH
(CH3)2-C=O
(CH3)2-C(C2H5)-OH
The IUPAC name for the formula :
is :
2-methyl-2-butenoic acid
3-methyl-3-butenoic acid
3-metyl-2-butenoic acid
2-methyl-3-butenoic acid
Which of the following can exhibit keto-enol tautomerism ?
H--H
(CH3)3C--H
CH3--H
CCl3--H
C.
CH3--H
Tautomerism is a special kind of functional isomerism in which the isomers exist in dynamic equilibrium with each other .It arises due to migration of hydrogen atom from one polyvalent atom to the other within the same molecule .The isomers thus obtained are called tautomers .
Thus , HCHO , CCl3CHO and (CH3)3CCHO do not show tautomerism due to the absence of hydrogen atom w.r.t carbonyl (2(-)C=O) group while CH3CHO shows tautomerism as