Multiple Choice QuestionsCatalytic dehydrogenation of a primary alcohol gives a :
secondary alcohol
aldehyde
ketone
ester
Waxes are esters of :
glycerol
long chain alcohols
glycerol and fatty acid
long chain alcohols and long chain fatty acids
Among the following, which is least acidic ?
phenol
o-cresol
p-nitrophenol
p-chlorophenol
B.
o-cresol
When an electron attracting group (like - NO2 , -Cl) is attached to the phenol ring , it stabilises the negative charge on the oxygen of phenoxide ion. Due to this reason acidic character of phenol increases .But when an electron donating group (like -CH3) is attached to the phenol ring , it destabilises the ring and hence , acidic character of phenol decreases . Thus , the correct order of acidic character is :
p-nitrophenol > p-chlorophenol > phenol > 0-cresol .
Which of the following organic compounds answers to both iodoform test and Fehling's test ?
Ethanol
Methanal
Ethanal
Propanone
The IUPAC name of the following compound is
propionic anhydride
dipropanoic anhydride
ethoxy propanoic acid
propanoic anhydride
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