Quizophrenia:quizzing at its best!!

Some more questions....
1)What was Lord Agni's wive's name?
2)Which is the first most widely spoken language?
3)Which is the world's busiest airport?
4)Which is the oldest military treatise?
5)Who holds the record for being the chief minister of an indian state for the longest duration till date?
6)What are we referring to when we say blue helmets?
7)With regard to photography,what is Maxwell's contribution?
8)Who was the first director of the IIM(ahmedabad)?
9)Whose birthday is celebrated as Inventor's day in Argentina?
10)Which city according to the hindu mythology derives its name from the fact that Laxmana cut demoness Shurpanakha?
11)Who was the first Indian woman pilot?
12)What was Walt Disney scared of?
13)Who has won the most oscar awards without starring in any movie?
14)What was depicted on the cover of the TIME magazine in 1942?
15)What connects harry potter 1,The Davinci code,Holy Blood Holy Grail?
16)Can you guess this formula gives us what?
{ (3.5)G + (0.5)V}/{4(H2O)3 +3(360degrees)=M

17)Where is the tallest statue of the Christ situated?
18)The name of which place means 'where sacks are stored'?
19)What is the height of the tallest wave till date?
20)Which is the oldest engineering college in India?