Which of the following institutes are considered necessary to promote 'Unity among diversity' in the Indian Federalism?

Which one of the following is not a feature to Indian federalism?

Which one of the following is not a feature of Indian federalism?

Which one of the following option determines that Indian Constitution is Federal?

Which one of the following is not a characteristic feature of Indian Federalism?

Which one among the following items is NOT included in the State List of the Constitution of India?