"The Constitution of India is neither purely federal nor purely unitary but is a combination of both" — who said so?

'The Constitution of India is neither purely federal nor purely unitary but is a combination of both.' Who said so?

Which of the following is not a federal feature of the Indian Constitution?

Which one of the following forms of Constitution contains the features of both the Unitary and Federal Constitution ?

Which one of the following is not a feature of the Constitution of India?

What is the nature of the Indian Constitution?