Aldehydes Ketones and Carboxylic Acids - Online Test
Q1. The following reaction is
Answer : Option C
Explaination / Solution:
This is Friedal Craft reaction.
Q2. Arrange the following compounds in decreasing order of their acid strength: i) trichloroacetic acid ii) trifluoroacetic acid iii) acetic acid and iv)formic acid
Answer : Option B
Explaination / Solution:
Fluorine is most electronegative so it increases acidity.
Q3. CH3 CHO and C6 H5 CH2 CHO can be distinguished chemically by:
Answer : Option D
Explaination / Solution:
CH3 CHO will give iodoform test and C6 H5 CH2 CHO will not give iodoform test.
Q4. Which of the following acids does not exhibit optical isomerism?
Answer : Option D
Explaination / Solution:
Maleic Acid shows Geometrical Isomerism but does not give optical isomerism.
Q5. The correct sequence of steps involved in the mechanism of Cannizzaro's reaction is
Answer : Option D
Explaination / Solution:
In cannizaro reaction 1st nucleophile OH− attacks on carbonyl carbon. Then hydride shifting take place. Followed by proton transfer.
Q6. The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits:
Answer : Option C
Explaination / Solution:
CH3 CH=CHCHO is the product which is suitably substituted so will show geometrical isomer.
Q7. Benzaldehyde and acetone can be best distinguished using
Answer : Option A
Explaination / Solution:
Aldehydes show tollen’s test while acetone which is a ketone doesnot give tollen’s test.
Q8. Acetone is treated with excess of ethanol in the presence of hydrochloric acid. The product obtained is:
Answer : Option D
Explaination / Solution:
Q9.
Identify the product in the reaction
Answer : Option A
Explaination / Solution:
Q10. The incorrect IUPAC name is
Answer : Option C
Explaination / Solution:
Numbering is done in a way that CO gets the lower number.
