Question

Match the Column-I with Column-II:

Column-I (Process)	Column-II (Catalyst)
(a) Cracking of hydrocarbons	(p) Ni
(b) Ostwald's process	(q) NO
(c) Sulphuric acid manufacture	(r) Pt
(d) Catalytic converter	(s) NiO

Answer 1

Process	Catalyst
a) Cracking of hydrocarbons	Pt
b) Ostwald's process	Pt
c) Sulphuric acid manufacture	NO, Pt
d) Catalytic converter	Ni,NiO

a) Cracking is a process in which large hydrocarbon molecules are broken down into smaller and more useful ones.

Platinum catalyst is used in cracking of hydrocarbons.

b) Ostwald's process is a chemical process for manufacturing Nitric acid. Ammonia is converted to nitric acid in a two step. It is oxidised with oxygen in the presence of platinum catalyst.

$4NH3+5O2\to 4NO+6H2O$

$c)\; Sulphuric\; acid\; is\; manufactured\; by\; two\; process\; -\; In\; contact\; process\; Pt\; is\; used\; as\; catalyst\; and\; in\; Lead\; chamber\; process\; NO\; is\; used\; as\; catalyst.$

$d)\; A\; catalytic\; converter\; is\; exhaust\; emission\; control\; device.\; In\; this\; devices\; Ni\; and\; NiO\; catalyst\; are\; used\; to\; reduce\; the\; toxic\; of\; gases\; to\; less\; toxic\; pollutant.$

Hence the correct options are $(a-r),(b-r),(c-q,r)and(d-p,s)$