From this App you can learn :

Define the terms acid, base, amphoteric substance and salt.
Classify the substances into acids, bases, amphoteric substances and salts.
Differentiate the properties of acids and bases.
Appreciate the various theories developed to describe acid base behavior of substances.
Define pH and express the strength of an acid or base on pH scale.
Understand the phenomenon of salt hydrolysis and know the significance of buffers.
Know the procedure involved in acid–base titrations, solve the problems based on acid–base titrations.
Plot and describe the titration curves.
Know the principle involved in using the indicators in acid – base titrations. Discuss the application of acids and bases.

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This topic covers under Chemistry subject as a part of the Chemical Reactions topic
and this topic contains following sub topics
Acid,Basis and Salts
Acids
Bases
Acid-base theories
Salts
Classification of acids & bases