CURRENT AFFAIRS

2016

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
University of Toronto scientists have discovered the oldest water sample dating back to about _________ billion years
A
5
B
7
C
10
D
2
Explanation: 

Detailed explanation-1: -University of Toronto geoscientists have discovered two billion-year-old water, believed to be the oldest water ever found, in a mine in Timmins, Ont .

Detailed explanation-2: -The world’s oldest known water has been discovered by researchers in Canada. A 17-year search of Ontario’s Kidd Creek Mine uncovered liquid that has been trapped between rocks for 1.6 billion years, according to the team at the University of Toronto.

Detailed explanation-3: -(Phys.org)-A team of researchers working deep in a mine in Canada has found water samples that date back approximately 2 billion years, breaking the record of oldest discovered water on the surface of the Earth by approximately 500 million years.

Detailed explanation-4: -Mineralogical evidence from zircons has shown that liquid water and an atmosphere must have existed 4.404 ± 0.008 billion years ago, very soon after the formation of Earth.

Detailed explanation-5: -The Kidd Creek Mine in Timmins, Ontario, Canada (north of the U.S. state of Michigan), is the deepest copper, zinc, and silver mine in the world, with excavation to more than 9, 800-ft depth. The rich deposit is a massive sulfide ore deposit in 2.7-billion-year-old volcanic material from the ancient seafloor.

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