Q40 of 270 Page 81

One of the following is a medicine for indigestion. This is:

Magnesium hydroxide (Milk of magnesia) is a mild base. It is used as an antacid as it neutralizes the excessive acid present in stomach.

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39 Someone put some universal indicator paper onto wet soap. The pH is 8. What does this tell you about the soap? 39 State whether a solution is acidic, alkaline or neutral if its pH is:

(i) 9 (ii) 4 (iii) 7 (iv) 1 (v) 10 (vi) 3

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