Which nation's leader called 'Coronavirus' its biggest challenge since World War II?

The book titled as "Invincible - A Tribute to Manohar Parrikar", is authored by whom?

The Indian Institute of Technology, Kanpur and Which of the following companies have collaborated to carry out joint research in industrial and infrastructure cybersecurity?

The Ordnance Factory Day is observed on which of the following dates?

A Meeting on Research in Indian Traditional Knowledge Systems was held in which of the following cities?

Which institute has developed a new hand-sanitizer as a preventive measure against Coronavirus?

From which one of the following plants, the insecticide pyrethrum is prepared 

Which of the following viruses causes common cold?