JAMB Chemistry 2018 Objective — Question 15
Question 15 of 36 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2018 Objective paper, with the correct answer and a full explanation.
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Which of the following reagents can be used to differentiate alkanals from alkanones?
- A. Hydrogen cyanide
- B. Sodium hydrogen trioxocarbonate (iv)
- C. Fehling's reagentCorrect
- D. 2,4-dinitrophenylhydrazine
Explanation
Fehling's reagent is suitable for distinguishing an alkanal from an alkanone, since the former (aldehyde) reduces Fehling's solution while the latter (ketone) does not.
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