How to identify high side switch or low side switch? Is the circuit a high side or low side switch? Why?
High-side switches the load from +V. (closer to +V than the load)

Low-side switches the load from GND or -V. (closer to GND or -V than the load)

Simple, no?

So now, do you think Q7/Q8 is on the high-side? Or low-side?



Q7/Q8 are acting together back-to-back to make a bidirectional switch. Almost every discrete MOSFET has a parasitic body diode so can only block current in one direction. You can see them in the symbol for the MOSFET.