At which of the following places was the 7th edition of the Global Fintech Fest 2026 inaugurated?

At which of the following locations was India’s first indigenous Optical Inter Satellite Link (OISL) unveiled by Astrogate Labs? 

On which of the following days is the International Day of Clean Air for blue skies observed every year?

On which of the following days is National Forest Martyrs Day observed every year?

Who wrote the book titled ‘A Century of Service – The RSS in Hundred Acts of Seva’, which has been in the news?