Which of the following countries has launched the world’s first commercial Upper 6GHz (U6GHz) internet network? 

Bodhana Sivanandan, of Indian origin, has become the top female chess player of which country?

On which of the following days is Siachen Day celebrated every year?

Rassie van der Dussen is a famous player of which sport, from which he recently retired?

What is the name of India’s first dedicated nuclear missile tracking and ocean surveillance ship deployed in the Arabian Sea?