Which microbe is used to decompose sludge into Bio- gas?

Sorter’s disease is associated with

 An airplane is able to fly because

The image of an object formed using the convex side of a steel spoon is 

 The ___is the effective border between India and the People's Republic of China?

New York city is situated one the bank of which of the following rivers?

Who is the author of the book ;Joothan”?

Petroleum means _________

What was Einstein's father’s name?

India asserted its exclusive rights on the mineral wealth found in the oceans and in the territorial waters by this constitutional amendment?

The metallurgical process in which a metal is obtained in a fused state is called ?