What is the connection between Ursula von der Leyen and Antonio Costa, who have been invited as chief guests for India’s Republic Day 2026?

Which of the following countries recently successfully tested an air-launched cruise missile named Taimur?

Kabindra Purkayastha passed away at the age of 94.  What field was he associated with?

By whom among the following was the book titled ‘Agni Sarasulo Vikasinchi Kamala Draupadi Murmu’, based on the life of President Draupadi Murmu, written?

On which of the following days is Kokborok Day celebrated?