​Which of the following reactions produces water insoluble salts?​

Correct option is C

The correct answer is (C) Precipitation Reaction.

• Precipitation Reaction A "chemical reaction occurring in an aqueous solution when two ionic bonds combine, yielding the creation of an insoluble salt" is what is meant by the term "precipitation reaction."
• Precipitates are insoluble salts created during precipitation reactions. Precipitation reactions are often double displacement events that result in the formation of the precipitate, a solid form of residue.
• The creation of insoluble salts that precipitate out of the solution results from these reactions when two or more solutions with various salt concentrations are mixed.
• Example- The chemical reaction between potassium chloride and silver nitrate, in which solid silver chloride is precipitated out, is one of the greatest examples of precipitation reactions.
• This is the precipitation reaction's byproduct, the insoluble salt. The chemical equation for this precipitation reaction is provided below- AgNO3(aqueous) + KCl(aqueous) —–AgCl(precipitate) + KNO3(aqueous)

Incorrect options explanation:

• Catalytic reaction: The process of catalysis involves introducing a catalyst to a chemical reaction to speed up the process. Catalysts are not destroyed during the reaction and are unaffected by it.
• Addition reaction: An organic reaction known as an addition occurs when two or more molecules join to form a larger molecule (the adduct). Because they also have double-bond nature, molecules containing carbon—hetero double bonds, such as carbonyl (C=O) or imine (C=N) groups, can be added.
• Displacement reaction: When an atom or group of atoms in a molecule are replaced by another atom, this is referred to as a displacement reaction. For instance, copper metal is displaced when iron is added to a solution of copper sulphate. A + B + C = A + B + C. When A is more reactive than B, the aforementioned equation holds true.