Aldehydes -Multiple Choice Questions Quiz

Interactive MCQs on “Aldehydes”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What is the general formula of aldehydes?

(a) R-CHO
(b) R-COOH
(c) R-CO-R
(d) R-O-R

Question 2: Which of the following reagents is commonly used for the oxidation of primary alcohols to aldehydes?

(a) KMnO4
(b) PCC
(c) NaBH4
(d) LiAlH4

Question 3: What is the IUPAC name of the aldehyde CH3CHO?

(a) Ethanal
(b) Propanal
(c) Butanal
(d) Pentanal

Question 4: Which of the following is a characteristic chemical property of aldehydes?

(a) They undergo nucleophilic substitution reactions
(b) They undergo nucleophilic addition reactions
(c) They undergo electrophilic substitution reactions
(d) They undergo electrophilic addition reactions

Question 5: Which of the following aldehydes is commonly used as a disinfectant and preservative?

(a) Formaldehyde
(b) Acetaldehyde
(c) Benzaldehyde
(d) Butyraldehyde

Question 6: What is the functional group present in aldehydes?

(a) -COOH
(b) -CHO
(c) -NH2
(d) -OH

Question 7: Which of the following is the most common method for the preparation of aldehydes?

(a) Reduction of ketones
(b) Oxidation of primary alcohols
(c) Ozonolysis of alkenes
(d) Acid-catalyzed hydration of alkynes

Question 8: Which of the following aldehydes is used in the production of Bakelite, a synthetic polymer?

(a) Formaldehyde
(b) Acetaldehyde
(c) Benzaldehyde
(d) Butyraldehyde

Question 9: Which of the following reagents is commonly used for the reduction of aldehydes to primary alcohols?

(a) LiAlH4
(b) NaBH4
(c) H2SO4
(d) KMnO4

Question 10: Which of the following aldehydes is responsible for the pungent smell of cinnamon?

(a) Formaldehyde
(b) Acetaldehyde
(c) Benzaldehyde
(d) Butyraldehyde