Multiple choice

Oxidation of benzaldehyde is an example of ----------------------- catalysis.

  1. homogeneous

  2. heterogeneous

  3. positive

  4. negative

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

There are certain, substance which, when added to the reaction mixture, retard the reaction rate instead of increasing it. These are called negative catalyst or inhibitors and the phenomenon is known as negative catalysis. Some examples are as follows. (i) Oxidation of sodium sulphite (ii) Oxidation of benzaldehyde