NMDCAT Practice test + Notes Chapter #9

MCQ-36
Aldehydes and ketones are functional group isomers with the general formula
A. C_nH_2nO
B. C_nH_nO
C. C_nH_3nO
D. C_2nH_2nO

Answer: A

MCQ-37
Isobutyl alcohol on oxidation gives a compound, which contains a functional group of
A. Ether
B. Carboxylic acid
C. Aldehyde
D. Ketone

Answer: C

MCQ-38
Why is it necessary to distil aldehyde formed from oxidation of primary alcohol through acidified potassium dichromate (VI) solution or acidified sodium dichromate (VI) solution?
A. Aldehyde formed is unstable and decomposes back to its original precursor i.e. primary alcohol.
B. Aldehyde formed may react with primary alcohol, the original reactant
C. Aldehyde may be oxidized further to the ketone.
D. Aldehyde formed may be oxidized further to Carboxylic acid

Answer: D

MCQ-39
What are X and Y in the given reaction oxidation of ketone
A. X= Acetic acid, Y = Propionic acid
B. X= Acetic acid, Y= Formic acid
C. X = Formic acid, Y= Acetic acid
D. X= Acetic acid, Y = Acetic acid