Which of the following reaction will aldehyde?

In which of the following reactions only aldehyde can be formed not ketone?

Which of the following reactions will produce aldehyde ?

In which of the following reactions aldehydes and ketones are ditinguished:

Which of the following reaction will give beta -keto aldehyde as the final product ?

In which of the of the following reaction aromatic aldehyde is treated with acid anhydride in prence of corresponding salt of the acid to give unsaturated aromtic acid

Which of the following combination of aldehydes gives cross cannizzaro reaction ?