By whom was India’s Green Hydrogen Certification Portal launched under the National Green Hydrogen Mission?

On which of the following days is the World Day to Combat Desertification and Drought observed every year? 

Which of the following became the 36th state or Union Territory in India to implement the Ayushman Bharat Pradhan Mantri Jan Arogya Yojana (PM-JAY)?

Who among the following has been appointed as the Chief of Army Staff of India?

With which of the following countries has India launched a critical minerals supply chain observatory?