- Home
- Standard 12
- Chemistry
General Principles and processes of Isolation of Elements
medium
The process, which does not use a catalyst is
A
Contact process
B
Thermite process
C
Ostwald's process
D
Haber's process
Solution
The catalyst is a substance, which lowers the activation energy of reaction because it provides an alternate pathway for reaction. Generally, catalyst increases the speed of a reaction.
The reaction involved in the thermite process is as follows:
$4 Al +2 Cr _2 O _3 \rightarrow 2 Al _2 O _3+4 Cr$ is itself a very fast reaction.
Apart from this, all processes are catalyzed.
Standard 12
Chemistry
