What is the difference between comet and asteroid?
which is the closest planet to the sun?
Eclipse does not occur in every new moon and full moon, why?
Define Eclipse. write down the types and causes of eclipse.
What is Anemometer? who invented it?
Explain about nebular theory.
Why is Pluto not considered a planet in solar system? Why it was considered a planet before?
World केस : 96086628 , मृत्यु : 2051579
USA केस : 24626441 , मृत्यु : 408623
India केस : 10582647 , मृत्यु : 152593
Nepal केस : 267992 , मृत्यु : 1969