Which is not a primary colour ?

Which planet is known as The Red Planet ?

Which is the longest river on earth ?

How many states does india has ?

B.R Ambedkar was born in which year.

Place these shapes in order of how many sides they have in descending order :- Square, Triangle, Octagon , Hexagon

Who invented Computer

Who was the First President of india ?

Which first electrical Item did Thomas edison Invented