Question

Solution
S.
No.
Colour of Approx- Nature of
pH paper -imate
pH value
substance
1 Saliva (before meal)
2 Saliva (after meal)
3 Lemon juice
4 Colourless aerated
drink
5 Carrot juice
6 Coffee
7 Tomato juice
8 Tap water
9 IM NaOH
10 IM HCI​

Answer 1

Answer:

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Answer 2

Answer:

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