Which of the following compounds will undergo self aldol condensation in the presence of cold dilute alkali?

Which of the following does not give formaldehyde on heating or distillation?

Acetaldehyde does not respond to

${\mathrm{CH}}_3\mathrm{CHO}+{\mathrm{H}}_2\mathrm{NOH}\to {\mathrm{CH}}_3\mathrm{CH}=\mathrm{NOH}+{\mathrm{H}}_2\mathrm{O}$

The above reaction occurs at

In Rosenmund reaction:

The conversion of acetaldehyde into ethyl acetate in the presence of aluminium ethoxide is called

Which of the following gives aldol condensation with the maximum possible yield?

The aldol condensation of acetaldehyde results in the formation of:

Propanal, on reaction with dilute $\mathrm{NaOH}$ forms: