SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The activation energy needed for a chemical reaction is decreased by a
A
catalyst.
B
reactant.
C
product.
D
substrate.
Explanation: 

Detailed explanation-1: -The process of speeding up a reaction by reducing its activation energy is known as catalysis, and the factor that’s added to lower the activation energy is called a catalyst.

Detailed explanation-2: -A catalyst (KAT-l-ihst) is a substance that decreases the activation energy needed to start a chemical reac-tion. As a result, a catalyst also increases the rate of the chemical reaction, or makes the products form faster. A catalyst takes part in a chemical reaction, but it does not get changed or used up.

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