Which catalyst is used in contact process of manufacturing of `H_2SO_4`?

Which catalyst is used in polymerization of ethylene?

In contact process some amount of H_2SO_4 is used to dissolve SO_3 explain which catalyst is used for the preparation of SO_3 ?

Molecular weight of H_2SO_4 is?

Which of the following process is used for the manufacture of H_2 ?

Which organic reagent is used for the manufacture of H_(2)O_(2) ?

The catalyst used in Ostwald's process is platinum gauze containing 55% rhodium.

Name the process used in the manufacture of Na_2CO_3 .

Which polymer is used in the manufacture of paints and lacquers -

Write the name of the catalyst used in Wacker Process.