Let's analyze each reaction:
A. Iodoform Reaction:
Acetaldehyde ($ CH_3CHO $) contains a $ CH_3CO- $ group and thus gives a positive iodoform test.
Acetone ($ CH_3COCH_3 $) also contains a $ CH_3CO- $ group and thus gives a positive iodoform test.
Conclusion: Both acetaldehyde and acetone undergo the iodoform reaction.
B. Cannizzaro Reaction:
The Cannizzaro reaction is given by aldehydes that do not have an α-hydrogen. Acetaldehyde has α-hydrogens and thus does not undergo the Cannizzaro reaction.
Acetone is a ketone and thus cannot undergo the Cannizzaro reaction.
Conclusion: Neither acetaldehyde nor acetone undergoes the Cannizzaro reaction.
C. Aldol Condensation:
The aldol condensation is given by aldehydes and ketones having at least one α-hydrogen. Acetaldehyde has α-hydrogens and thus undergoes aldol condensation.
Acetone also has α-hydrogens and thus undergoes aldol condensation.
Conclusion: Both acetaldehyde and acetone undergo aldol condensation.
D. Tollen's Test:
Tollen's test is given by aldehydes. Acetaldehyde is an aldehyde and thus gives a positive Tollen's test.
Acetone is a ketone and does not give the Tollen's test.
Conclusion: Only acetaldehyde undergoes the Tollen's test.
E. Clemmensen Reduction:
The Clemmensen reduction is used to reduce aldehydes and ketones to alkanes. Both acetaldehyde and acetone undergo Clemmensen reduction.
Conclusion: Both acetaldehyde and acetone undergo Clemmensen reduction.
Final Conclusion:
The reactions that both acetaldehyde and acetone undergo are: Iodoform reaction (A), Aldol condensation (C), and Clemmensen reduction (E).
Final Answer:
The final answer is $ A,\ C\ \text{and}\ E\ \text{only} $.





Consider the following reaction of benzene. the percentage of oxygen is _______ %. (Nearest integer) 
A substance 'X' (1.5 g) dissolved in 150 g of a solvent 'Y' (molar mass = 300 g mol$^{-1}$) led to an elevation of the boiling point by 0.5 K. The relative lowering in the vapour pressure of the solvent 'Y' is $____________ \(\times 10^{-2}\). (nearest integer)
[Given : $K_{b}$ of the solvent = 5.0 K kg mol$^{-1}$]
Assume the solution to be dilute and no association or dissociation of X takes place in solution.
Inductance of a coil with \(10^4\) turns is \(10\,\text{mH}\) and it is connected to a DC source of \(10\,\text{V}\) with internal resistance \(10\,\Omega\). The energy density in the inductor when the current reaches \( \left(\frac{1}{e}\right) \) of its maximum value is \[ \alpha \pi \times \frac{1}{e^2}\ \text{J m}^{-3}. \] The value of \( \alpha \) is _________.
\[ (\mu_0 = 4\pi \times 10^{-7}\ \text{TmA}^{-1}) \]
A small block of mass \(m\) slides down from the top of a frictionless inclined surface, while the inclined plane is moving towards left with constant acceleration \(a_0\). The angle between the inclined plane and ground is \(\theta\) and its base length is \(L\). Assuming that initially the small block is at the top of the inclined plane, the time it takes to reach the lowest point of the inclined plane is _______. 