Question

We cannot find pH , using pH paper of -

A) Lemon Juice
B) Blood
C) Washing Soda
D) Urine​

Answer 1

Answer:

B) Blood

Explanation:

Blood is not a base or an acid so the ph paper doesn't show any change

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Answer 2

Answer:

blood is right answer

but if you will go deep in this question

you find that blood is slightly basic in nature

But according to your question

blood is right answer

Explanation:

I hope you will understand