Question

why do the president is called the nominal head while the prime minister is called the real head?

Answer 1

Because though the president is said to be more powerful but in reality, power is exercised by the council of ministers headed by the PM. Also the President works on the suggestions by the PM.

Answer 2

Answer:

The "President of India" is called the "nominal head", "nominal executive" or the "constitutional Head of the State" because even though the country is run in the name of the President. In reality the country is run by a "Council of Ministers" the head of which is the "Prime Minister". Hence the real power lies with the "Prime minister" due to which the "Prime minister" is called the "real head".