MolSynapse
question bank
All chapters
NEET
JEE
Practice
MolSynapse
/
Question bank
/
Organic Reaction Mechanisms I: Nucleophiles and Carbonyl Addition
/
Nucleophilic addition to aldehydes and ketones
NEET level
Single correct option
Difficulty 1 of 3
o1059
Acetone is reduced with
NaBH
X
4
in ethanol. The organic product is
A
propanal
B
propan-1-ol
C
propane
D
propan-2-ol
Answer: D
NaBH
X
4
delivers hydride to the carbonyl carbon of a ketone, and protonation gives the secondary alcohol. Acetone therefore gives
CH
X
3
−
CH
(
OH
)
−
CH
X
3
.
Practice Organic Reaction Mechanisms I: Nucleophiles and Carbonyl Addition
More on Nucleophilic addition to aldehydes and ketones
Previous question
Next question
More questions on Nucleophilic addition to aldehydes and ketones
Which of the following carbonyl compounds is the most reactive towards nucleophilic addition of HCN?
NEET level
Acetaldehyde is treated with (i) CH3MgBr in dry ether; (ii) H3O+. The product is
NEET level
Formaldehyde reacts with C2H5MgBr followed by acid hydrolysis. The product is
NEET level
The reagent that converts R2C=O into R2CH2 under strongly basic conditions is
NEET level
In the formation of a cyanohydrin from a ketone with HCN and a trace of base, the species that attacks the carbonyl carbon is
NEET level
During nucleophilic addition to a carbonyl group, the hybridisation of the carbonyl carbon changes from
NEET level