Organic Chemistry Questions and Answers – Physical Properties of Aldehydes | Organic Chemistry Multiple Choice Questions and Answers

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Questions
1 Aldehydes have which type of smell?
A Fish like smell
B Bitter almond smell
C Pungent smell
D Rotten egg like smell

Answer:Pungent smell
2 What is the name of the process in which aldehyde get oxidise in presence of air?
A Calcination
B Autoxidation
C Cannizzaro reaction
D Baeyer villiger oxidation

Answer: Autoxidation
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3 Which of the following aldehyde shows oligomerization?
A Acetaldehyde
B Propanal
C Butanal
D Benzaldehyde

Answer: Acetaldehyde
4 What will be the product if we add water to the aldehyde?
A Alcohols
B Epoxides
C Geminal diols
D Peroxides

Answer: Geminal diols
5 In Infrared spectroscopy, at what wave number will band of CO bond of aldehyde will occur?
A 1500 cm-1
B 1495 cm-1
C 1965 cm-1
D 1700 cm-1

Answer: 1700 cm-1
6 What is the chemical shift of formyl hydrogen in aldehyde?
A 6
B 7
C 8
D 9

Answer:9
7 Which of the following aldehyde is present as gas?
A Acetaldehyde
B Formaldehyde
C Butyraldehyde
D Benzaldehyde

Answer: Formaldehyde
8 Which of the following compound has more boiling point than aldehyde?
A Alcohol
B Alkanes
C Ketones
D Ether

Answer: Alcohol
9 Which of the following is the characteristic smell of benzaldehyde?
A Fish like smell
B Bitter almond like
C Pungent smell
D Rotten egg like smell

Answer: Bitter almond like
10 Which of the following aldehyde is most soluble in water?
A Acetaldehyde
B Formaldehyde
C Butyraldehyde
D Benzaldehyde

Answer: Formaldehyde

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