A lot of times! See the concepts are limited and they have to make the questions again and again on the same concepts, due to which the question does not repeats but the concepts repeat. The concepts which have repeated in the past are:

Kirchhoff's Law
Alpha/Beta Decay
General Kinematics

Electrochemistry (breaking down)
Strength of Acids/Bases
Number of Lone Pairs

Like these there are many more, that is the reason why it is recommended to go through the papers of previous years. Hope I have answered your question. All the best!