Quantity I: A vessel contains a mixture of milk and water in the ratio of 7 : 5. If 9 litre of mixture is sold and replaced by same amount of water then the new mixture contain milk and water in the ratio 7 : 9. Find initial amount of water?

Quantity II: A vessel is full of 63 litre of milk. If 9 litre of milk is taken out and replace by water. Further 7 litre of mixture is taken out and replace again with water then find the amount of water at the end?

Consider the following disciplines/subjects:

1.      Human Physiology

2.      Astronomy

3.      Astrology

Consider the following developments associated with knowledge of science in ancient period :

1.      Decimal number system

Which of the following will complete the adjoining figure

Which one of the following rivers flows in a rift river?

The Tirathgarh waterfall is found in the state of

The headquarter of RBI is situated at-

What are the 'Polyps' ?

Which incident led Gandhi ji to with draw non-cooperation movement? 

Consider the following statements :

A, B, C, D and E are standing in row. 'A' is between 'B' and 'D'. E is not at the starting of row. 'C' is just before D.