UPSC Civil Service Exam Questions - Engineering

Q1:

Which one of the following would contain water with the maximum amount of turbidity ?

A Lakes

B Oceans

C Rivers

D Wells

ANS:C - Rivers

Could you kindly verify the answer and get the facts straight? I think it is B Oceans, simply because oceans make up for majority percentage age of water on the planet and you are bound to get pure water from lakes, water and wells but not from oceans.