What happens when a solution of an acid is mixed with a 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
1
(i) only
2
(i) and (iii)
3
(ii) and (iii)
4
(i) and (iv)