Which compound contains the $-COOH$ functional group?

An element is a main constituent of paper,diamond and clothes etc. It forms covalent bonds with itself and other elements.
$(a)$ Identify the element.
$(b)$ Write the electron dot structure of its oxide.
$(c)$ Draw the electron dot structure of methane and ethane.

Which aldehyde compound does not contain an alkyl group?

The oxidising agent which can oxidise ethanol to ethanoic acid is:

What is hydrogenation? What is its industrial application?

What is the reaction called in which ethanol reacts with acetic acid in the presence of concentrated $H_{2}SO_{4}$ to form ethyl acetate and water?