Who appoint the Chief justice of Supreme court?

What was the exact constitutional position of the Indian Republic when the Constitution was brought into force with effect from 26th January, 1950? 

A federal structure for India was first put forward by the:

Which of the following exercised the most profound influence in framing the Indian Constitution? 

NITI Aayog has been formed to replace which of the following institution?

Theorphrastus is called the father of