Substances that cause a reaction to occur or proceed at a different rate without the reaction itself being affected are called -

Substances that cause a reaction to occur or proceed at a different ra

1.	Substances that cause a reaction to occur or proceed at a different rate without the reaction itself being affected are called -
A.	Catalysts
B.	Hydrocarbons
C.	Oxidising agents
D.	Substitutes
Answer» B. Hydrocarbons