COMEDK · Chemistry · 27. Aldehydes and Ketones
Which of the following organic compounds answers to both iodoform test and Fehling's test?
- A Ethanol
- B Methanol
- C Ethanal
- D Propanone
Answer & Solution
Correct Answer
(C) Ethanal
Step-by-step Solution
Detailed explanation
Iodoform test: Compounds with \(CH_3CO-\) or \(CH_3CH(OH)-\) groups. Fehling's test: Aldehydes. Ethanal (\(CH_3CHO\)) has a \(CH_3CO-\) group (aldehyde form) and is an aldehyde. Ethanal
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- The product formed when hydroxylamine condenses with a carbonyl compound is calledCOMEDK 2020 Medium
- If the enthalpy of formation of a diatomic molecule \(\mathrm{AB}\) is \(-400 \mathrm{~kJ} / \mathrm{mol}\) and the bond dissociation energies of \(\mathrm{A}_2\) and \(\mathrm{B}_2\) and \(\mathrm{AB}\) are in the ratio \(2: 1: 2\), what is the bond dissociation enthalpy of \(\mathrm{B}_2\) ?COMEDK 2024 Medium
- Which of the following pairs of ions in iso-electronic and iso-structural?COMEDK 2021 Medium
- The enthalpy change accompanying the freezing of 18 g of water at \(5^{\circ} \mathrm{C}\) to ice at \(-5^{\circ} \mathrm{C}\) is:
[Given: \(\Delta H_{(\text {fusion })}=6 \mathrm{~kJ} \mathrm{~mol}^{-1}\) at \(0^{\circ} \mathrm{C} ; \quad C_p\left(H_2 \mathrm{O}, l\right)=75.3 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1} ; \quad C_p\left(H_2 \mathrm{O}, s\right)=36.8 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\) ]COMEDK 2025 Medium - Consider the cell
\(\mathrm{Pt}\left|\mathrm{H}_2(\mathrm{~g})(1 \mathrm{bar})\right| \mathrm{H}^{+}(\mathrm{aq}) \| \mathrm{Cu}^{2+}(\mathrm{aq}) \mid \mathrm{Cu}\)
At 298 K , the emf of the cell is 0.31 V . The pH of the acidic solution is 3 . The concentration of \(\mathrm{Cu}^{2+}\) is:COMEDK 2025 Medium - The element with the highest third ionisation enthalpy is:COMEDK 2026 Hard
More PYQs from COMEDK
- According to Baeyer's strain theory which is highly stable?COMEDK 2020 Hard
- Five persons entered the lift cabin on the ground floor of an eight-floor apartment. Suppose that each of them independently and with equal probability, can leave the cabin at any floor beginning with the first floor, then the probability of all five persons leaving at different floors isCOMEDK 2025 Medium
- Identify the incorrect statement.COMEDK 2023 Medium
- Mohr's salt has the formulaCOMEDK 2023 Easy
- The point on the line \(x+y=4\) that lie at a unit distance from the line \(4 x+3 y=10\) isCOMEDK 2025 Medium
- When \(9.2 \times 10^{-3} \mathrm{~kg}\) of formic acid is added to 600 ml of water the freezing point of water is depressed. If \(30 \%\) of Formic acid undergoes dissociation what would be the freezing point of the solution? ( \(\mathrm{K}_{\mathrm{f}}\) of \(\mathrm{H}_2 \mathrm{O}\) is \(1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol} ; \mathrm{MM}\) of formic acid: 46 amu )COMEDK 2025 Medium