Daily Current Affair 27 April _______ developed carbon nitride quantum dots (g-CNQDs), a low-cost metal-free nanomaterial for visible light microbial disinfection which is an alternative to silver and other metal-based materials. CSIR ICMR DRDO INST Who is the President of Ukraine? Volodymyr Zelensky Oleksiy Honcharuk Arsen Avakov Dmitry Gordon Hubble was named after _______. Thomas