Düsseldorf is the capital of which German state?

Hanover is the capital of which German state? What is the capital of the German state of Mecklenburg-Vorpommern? Schwerin is the capital of which German state? What is the capital of the German state of North Rhine-Westphalia? What is the capital of the German state of Rhineland-Palatinate? Mainz is the capital of which German state? What is the capital of the German state of Saarland? Saarbrücken is the capital of which German state?