On which of the following days is the International Day of Human Spaceflight celebrated every year?

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

Where was the ISSF World Cup Rifle and Pistol competition held, in which India won the gold medal in the 10m Air Pistol Mixed Team event? 

By whom was the nationwide ‘Nari Shakti Yuva Sansad’ organized? 

In which of the following countries was the 9th Indian Ocean Conference held?