Which death anniversary of India’s second President, Dr. Sarvepalli Radhakrishnan, was observed on April 17, 2026?

Which birth anniversary of Bharat Ratna Dr. B.R. Ambedkar was celebrated on April 14, 2026?

 What rank has India been assigned globally in terms of patent filings for the fiscal year 2025-26? 

In which of the following states has India’s first Prototype Fast Breeder Reactor (PFBR) been established?

In which of the following cities is the Sansad Khel Mahakumbh being organized?