Question

Give one example
of positive catalyst

Answer 1

nikle
Ni
....
.....h2so4

Answer 2

A catalyst is a substance that affects the rate of reaction by varying the activation energy of the reaction.
Positive catalyst are those catalyst which decreases the activation energy and thereby increasing the reaction rate.

Examples:Ni is used as catalyst for hydrogenation of hydrocarbons.Pt or Ni is used as catalyst in the manufacturing process of ammonia.