Chemical Properties of Carbon Compounds Questions in English

(B) The reaction of methanol with carbon monoxide in the presence of an $I_2-Rh$ catalyst is known as the Monsanto process or carbonylation of methanol.
The chemical equation for this reaction is: $CH_3OH + CO \xrightarrow{I_2-Rh} CH_3COOH$.
In this process,methanol reacts with carbon monoxide to produce acetic acid $(CH_3COOH)$.

(D) Methanal,also known as formaldehyde $(HCHO)$,is the simplest aldehyde.
Its boiling point is approximately $-19^{\circ}C$,which corresponds to $254\,K$ (often cited as $253\,K$ in standard chemistry textbooks).
Therefore,the correct option is $D$.

(B) Propanone,also known as acetone,is a common organic solvent with the chemical formula $CH_3COCH_3$.
The boiling point of propanone is $329\;K$ $(56\;^{\circ}C)$.
This value is a standard physical property of the compound.

(C) Teflon,chemically known as polytetrafluoroethylene $(PTFE)$,is a synthetic fluoropolymer of tetrafluoroethylene.
It is widely used for coating nonstick cooking vessels because it has a high melting point,is chemically inert,and possesses a very low coefficient of friction,which prevents food from sticking to the surface.