Acetone and acetaldehyde can be distinguished by

From the compounds given below,the number of compounds which give a positive Fehling's test is:
Benzaldehyde,Acetaldehyde,Acetone,Acetophenone,Methanal,$4$-nitrobenzaldehyde,cyclohexane carbaldehyde.

Which of the following compounds cannot form iodoform?

Which of the following aldehydes is most reactive towards nucleophilic addition reactions?

When acetaldehyde is heated with Fehling solution,a red precipitate is formed. Which of the following is that?

In the reaction sequence $C_6H_5-CH(OH)-CH_2-C(=O)-CH_3 \xrightarrow{(i) NaOBr, (ii) H_2O/H^{+}, (iii) \Delta}$ product,the product will be: