H_(2)O_(2)" is manufactured these days "

H_(2)O_(20 is manufactured these days

H_(2)SO_(4) is manufactured by

H_(2)SO_(4) is manufactured by

Industrially H_(2)O_(2) is manufactured by _________.

How can H_(2)O_(2) be manufactured by using 50% H_(2)SO_(4) solution?

Match the column- {:("Column I(Compound)","Column-II(Properties)"),("Perhydrol","Dilute solution of"H_(2)O_(2)),("Water gas","Manufacture of" H_(2)),("Bosch's process",CO+H_(2)),(CH_(4)+H_(2)O,"Antioseptic and germicide"):}

In the manufacture of H_(2)SO_(4) by contact process, the presence of As_(2)O_(3) acts as :-

In the manufacture of H_(2)SO_(4) by contact process, the presence of As_(2)O_(3) acts as :-