Rosenmund Reduction

(a) Account for the following : (i) Cl-CH_(2)COOH is a stronger acid than CH_(3)COOH (ii) Carboxylic acids do not give reaction of carbonyl group (b) write the chemical equation to illustrate the following name reactions: (i) Rosenmund reduction (ii) Cannizzaro 's reaction (C ) Out of CH_(3)CH_(2)-CO-CH_(2)-CH_(3) and CH_(3)CH_(2)-CH_(2)-CO-CH_(3) which gives iodoform test?

Write a note on Rosenmund's reduction.

What reagtent isused in the Rosenmund's reduction?