Question

Which is the national sport of India?

Answer 1

India Doesn't Have any National Sports.

And

HOCKEY IS NOT OUR NATIONAL SPORTS

In 2012, In the reply of an RTI, Government of India have clarified that India does not have a National Sports.

Yes, it is true that India won 6 consecutive gold medals in Hockey at Olympics.
Even in NCERTs, it is written that Hockey is the national game of India.
But Union ministry of Youth affairs clearly said that Hockey is not the national sports of India.
For clarification, one can check government's official website of "National symbols of India" and there too you will not find the section of national sports. 


The RTI was filed by a then 10 years old girl "Aishwarya Parashar"

Answer 2

hockey is our national game....

history of hockey....

The first hockey club in India came up in Calcutta in 1885-86 and soon Bombay and Punjab followed suit. ...

The first Balbir Singh played with the great Indian teams of 1948, 1952 and 1956.

He reached the pinnacle of success at Helsinki in 1952 when he scored five goals in a 6-1 gold medal victory over the Netherlands....

hope it helps dude...