Which substance is produced by the oxidation of methanal in the presence of an oxidising agent?

Both soap and detergent are some type of salts. What is the difference between them? Describe in brief the cleansing action of soap. Why do soaps not form lather in hard water? List two problems that arise due to the use of detergents instead of soaps.

Explain the given reactions with examples:
$(a)$ Hydrogenation reaction
$(b)$ Oxidation reaction
$(c)$ Substitution reaction

Identify and name the functional groups present in the following compounds:
$(a)$ $CH_3-CH_2-CH_2-OH$
$(b)$ $CH_3-CH_2-COOH$

Which functional group is present in alcohol?

Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms,e.g. hydrogen. After the formation of four bonds,carbon attains the electronic configuration of