Hey,
I've recently purchased this, not for the 'predicted' aspect (because you can't really predict what's in the exam). But more-so to use as a practice paper leading up to the exam.
I have to be honest, I think it's a terrible paper.
Whilst I believe the content was bordering on the spec, there were certain parts which were highly abstracted, making them mostly inaccessible marks for A-Level AQA knowledge.
The multiple choice was awful, with plenty of contradictions and lack of description.
I can assure you kWh is a unit of energy, however I believe the paper was testing our knowledge of uppercase letters there, as they wrote (KWh), K isn't kilo (k). Though, going by the same level of scrutiny, their correct answer of 'Energy is not conserved in inelastic collisions' is also technically false. Kinetic energy isn't conserved, overall energy is always conserved (in any interaction).
Hated the paper, I would definitely recommend the CGP practice paper instead.
Feel free to send any questions you answered over if you believe they should be right, I can compare it to mine.