I think they will ask things about - -communication / communicating with patients - potentially communicating with those who are confused / have hearing difficulties / are distressed.
- safety related things E.g about escalating concerns to the nurse in charge
- potentially safeguarding (whAt do you do if... type questions).
- what do you do if a patient declines care (as an example - look at communication, consent, other ways you can support patients):
For clinical skills, I would make sure you are up to date with some info about skin care (pressure ulcer prevention), nutrition and hydration, personal care.
When they ask, try to link it to examples of patient / service user contact in your current role - aware that it's not exactly the same, but the principles of safe patient care are the same irrespective of where you are).
Make sure you have a really good answer to the why do you want this job question, which no doubt they will ask.
Make sure you have looked at the trusts website and can find the trust values and vision - some of the NHS is moving to values based interviews (because you can teach someone plenty of clinical skills, but if they can't reflect the trust values, it's more difficult).
I don't work in a hospital, but those are pretty generic NHS type questions. Your experience in a care home is absolutely relevant given the a high percentage of those in hospital are over 75, often with multiple conditions.
They don't / won't expect you to know everything, but they will expect you to be able to give a sensible answer and rationale to demonstrate you would be safe.