Amitabh Bachchan was recently conferred with the prestigious Dada Saheb Phalke Award. Who among the following was the first recipient of the award ?

Which one among the following metals is used in fireworks to make a brilliant white…

Why hard water does not give lather with soap ?

What is the role of positive catalyst in a chemical reaction?

Which allotropy of carbon is in rigid three-dimensional structures?  

Food cans are coated with tin but not with zinc because