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

Which of the following has become the first city for international travel under India’s ‘Easy Connect Model’? 

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)?

On which of the following days is the World Day Against Child Labour observed every year?

On which of the following days is World Sickle Cell Day observed every year?