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 sequence of reactions : 
Molar mass of the product formed (A) is ______ g mol\(^{-1}\).
Predict the major product $ P $ in the following sequence of reactions:
(i) HBr, benzoyl peroxide
(ii) KCN
(iii) Na(Hg), $C_{2}H_{5}OH$
Nature of compounds TeO₂ and TeH₂ is___________ and ______________respectively.
The magnitude of heat exchanged by a system for the given cyclic process ABC (as shown in the figure) is (in SI units):
