Thank you for reporting, we will resolve it shortly
Q.
$Al_{2}(SO_{4})_{3}$ is used in the following but not
NTA AbhyasNTA Abhyas 2020The p-Block Elements - Part2
Solution:
Aluminium sulphate is mainly used a coagulating agent in purification of drinking water and waste water treatment, as mordant in dying and printing textile and also used in calico printing and sizing of paper industry.