How will you convert benzaldehyde to
(I) C₆H₅COOH
(ii) C₆H_sCH₂OH
(iii) C₆HSCH₃

What is Malachite green dye? Explain its preparation?

Formic acid reduces Tollen's reagent but acetic acid does not - Give reasons.

Write the structure of 'A' and 'B' in the following reaction
\({ C }_{ 6 }{ H }_{ 5 }MgBr+{ CO }_{ 2 }\overset { (i)CO_{ 2 } }{ \underset { (ii){ H }_{ 2 }O/{ H }^{ + } }{ \longrightarrow } } A\overset { { Br }_{ 2 } }{ \underset { FeBr_{ 3 } }{ \longrightarrow } } B\)

Give the IUPAC names for the following:
(i) Crotonaldehyde
(ii) Methyl n-propyl ketone
(iii) Phenyl acetaldehyde.