Match Column-$I$ with Column-$II$ :

Column-$I$	Column-$II$
$(a)$ $NaOH$	$(p)$ Silvine
$(b)$ $Na_2CO_3$	$(q)$ As cooling agent in nuclear reactor
$(c)$ Liquid $Na$	$(r)$ Detergent soap
$(d)$ Potassium	$(s)$ In purification of Bauxite

(A) $NaOH$ is used in the purification of Bauxite $(a-s)$.
$Na_2CO_3$ is used in the manufacture of detergent soap $(b-r)$.
Liquid $Na$ is used as a coolant in nuclear reactors $(c-q)$.
Potassium is found in the mineral Silvine $(KCl)$ $(d-p)$.
Thus,the correct match is $(a-s), (b-r), (c-q), (d-p)$.