Answer: The given situation is true.
Explanation:
According to collision theory, when molecules of a substance or reactant particles collide with proper orientation then there will be increase in the rate of a reaction.
Also, when we increase the temperature then there will be increase in kinetic energy of molecules. As a result, they collide rapidly with each other causing faster formation of products.
Therefore, we can conclude that the statement, if reactant particles collide in the proper orientation, the collision will be effective and the reactants will form products, is true.
