What is the most suitable Quantum Mechanics book for these questions?

[patric44]

i want to know what is the most suitable quantum mechanics that will enables me after studying it to answer these specific questions ?
i mean based on the hardness of these questions ( what book would you suggest to study these subjects ) .
and by the way what is the level of these QM questions ( intermediate - advanced ... very advanced ) :

 

[Demystifier]

Schiff would be fine.

 

[vanhees71]

Or Messiah.