$17.$ Which process is used to manufacture bleaching powder?

$-$ a$)$ Solvay process

$-$ b$)$ Chloralkali process

$-$ c$)$ Weldon process

$-$ d$)$ Hooker process

$18.$ What is the primary use of bleaching powder?

$-$ a$)$ Disinfectant

$-$ b$)$ Fertilizer

$-$ c$)$ Food preservative

$-$ d$)$ Fuel