How is acetaldehyde prepared by the ozonolysis of CH₃CH=CHCH₃?

Explain Stephen's reaction.

What is Rosenmund's reduction? What is the purpose of adding BaSO₄ in it?

Formaldehyde and benzaldehyde give Cannizaro reaction but acetaldehyde does not - account for this.

Explain the isomerism exhibited by carboxylic acids.

How is carboxylic acid prepared from alcohols?

How are the following conversions carried out?
(i) Benzaldehyde from toluene
(ii) Benzoin from benzaldehyde

Write a note on
(i) Perkin's reaction, and
(ii) Knoevenagal reaction.

An organic compound, C₂H₄O gives a red precipitate when warmed with Fehling's solution. It also undergoes aldol condensation in presence of alkali.
(i) Write IUPAC name of the compound.
(ii) Predict the hybridization of carbon atoms in the compound?
(iii) Write equation for the reaction

What happens when the following compounds are treated with dilute NaOH solution in cold?
(i) propanal
(ii) (CH₃)₃C-CHO

Write short notes on Popoff's rule.

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

Organic compound with molecular formula C₃H₆O has two isomers (A) and (B). (A) on heating with NaOH in I₂ forms a yellow precipitate while (B) does not. Identify the isomers A and B and explain the reactions.

What is Malachite green dye? Explain its preparation?

Predict the product when calcium ethanoate and calcium methanoate are dry distilled. Explain the reaction.