E-PolyLearning

36. PH values has a range of
a. 1 to 7
b. 0 to 10
c. 1 to 14
d. 0 to 14
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Answer: (d).0 to 14

37. Rain water has a pH of
a. 1
b. 3
c. 5
d. 7
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Answer: (c).5

38. Stronger acid, the
a. less the hydrogen ions be
b. the more the hydrogen ions be
c. the more the covalence be
d. the more the hydroxyl ions
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Answer: (b).the more the hydrogen ions be

39. Acidic oxides do not include
a. CO₂
b. SO₂
c. P₂O₅
d. PbO
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Answer: (d).PbO

40. When neutral, indicators show
a. red color
b. blue color
c. yellow/green color
d. pink color
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Answer: (c).yellow/green color