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What is the pH value of tears?

(a) 7.4
(b) 8.5
(c) 6.0
(d) 6.3

Anurag Mishra Professor Asked on 30th June 2016 in Chemistry.
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    Answer: (a) 7.4 

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    Anurag Mishra Professor Answered on 1st July 2016.
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