When is "World Cotton Day" celebrated every year?

Volcano Anak Krakatau erupted on 11 April. It spewed a column of ash 500 meters into the sky. Where is volcano Anak Krakatau located?

Which institute designs 'WardBot' to deliver food, medicines to COVID-19 patients in isolation wards without human intervention?

In which examination has Sachin from Bihar secured first position in the country?

Which country is going to register the first vaccine of Corona on August 12?

How many mega projects have been inaugurated by the Prime Minister Shri Narendra Modi under the Namami Gange Mission in Uttarakhand?

Recently, NASA renamed the WFIRST Hubble Telescope after which scientist?

Which player, who has been a member of Barcelona Flowerball Club for 20 years, has asked to leave the club?