Subject :Chemistry Class : Class 7
The process in which an acid completely reacts with a base to form salt and water is called neutralisation. The salts which are formed may be acidic, basic or neutral. The substances which do not bring any change in the colour of the indicators are called neutral substances.
When sodium hydroxide is added to dilute hydrochloric acid
A sodium chloride salt is formed.
B sodium chloride salt and water are formed.
C sodium chloride salt and water are formed and heat is evolved.
D sodium chloride salt and water are formed and heat is absorbed.