Aldehydes Ketones and Carboxylic Acids - Online Test
Q1. Aldehydes are produced on reduction of the following by DIBAL – H
Answer : Option C
Explaination / Solution:
Both Nitriles and esters are reduced to Aldehyde on reaction with DIBAL-H.
Q2. The oxidation of toluene to benzoic acid can be stopped at the aldehyde stage. to give benzadehyde, The reagent used for the purpose is one of the following.
Answer : Option B
Explaination / Solution:
This is Etard Reaction.
Q3. Aldehydes are prepared by reducing nitriles to corresponding imines with stannous chloride in the presence of hydrochloric acid. This reaction is called
Answer : Option D
Explaination / Solution:
Reaction for preparation of aldehydes by reducing RCN is stephens Reaction.
Q4. The oxidation of toluene to benzoic acid can be stopped at the aldehyde stage. The reaction is called
Answer : Option A
Explaination / Solution:
Etard is specific reaction for conversion of toluene to Benzaldehyde.
Q5. Benzene gets converted to benzaldehyde by Gatterman – Koch reaction. The appropriate reagent for the conversion is
Answer : Option B
Explaination / Solution:
Q6. Arrange the following sets of compounds in order of their increasing boiling points : Pentan – 1 – ol, butan – 1 – ol, butan – 2 – ol, ethanol, propan – 1 – ol, methanol
Answer : Option B
Explaination / Solution:
Boiling point is α Vanderwall forces α Molecular weight.
Q7. Arrange the following alcohols, hydrocarbon and ether in order of their increasing boiling points Pentan – 1 – ol, n – butane, pentanal, ethoxyethane.
Answer : Option A
Explaination / Solution:
Alcohols have higher boiling points than aldehydes.
Q8. IUPAC name of the following compound is
Answer : Option A
Explaination / Solution:
This is 1-methoxy-1-methylethane.
Q9. One of the following is used for the separation and purification of aldehydes
Answer : Option A
Explaination / Solution:
NaHSO3 is used for purification of aldehydes.
Q10. The aldehydes and ketones undergo one of the following reactions.
Answer : Option B
Explaination / Solution:
Aldehydes and Ketones undergoes nucleophilic addition reaction .
