What happens when the solution of an acid is mixed the solution of a base in a test tube?
[I] The temperature of the solution increases
[II] The temperature of the solution decreases
[III] The temperature of the solution remains the same
[IV] Salt formation takes place
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[D] [I] and [IV]
As the neutralisation process is an exothermic reaction, the temperature of the solution increases. When an acid reacts with a base, a neutral salt is formed by the neutralisation process.
Acid + Base → Salt + Water