किस कानूनविद ने भारतीय संविधान को 'एक मजबूत केंद्रीयकरण की प्रवृत्ति वाला संघवाद' (a federation with a strong centralising tendency) कहा था?

In India, the 'Right to Know' was elevated to the status of a fundamental right through judicial interpretation in which landmark case?

Which Article of the Constitution of India confers exclusive power on Parliament to make laws regarding Goods and Services Tax (GST) on inter-State trade or commerce?