E-PolyLearning

11. Apples contain
a. citric acid
b. malic acid
c. tartaric acid
d. acetic acid
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Answer: (b).malic acid

12. Consider equation P₄O₁₀ + H₂O → H₃PO₄. number of moles of H₃PO₄ produced by reaction are
a. 2
b. 4
c. 6
d. 8
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Answer: (b).4

13. Soap is
a. acidic
b. alkaline
c. neutral
d. basic
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Answer: (b).alkaline

14. An alkali (OH-) is a
a. water soluble base
b. water insoluble base
c. oil soluble base
d. oil insoluble base
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Answer: (a).water soluble base

15. In Universal indicators, a pH of 7 is shown with
a. yellow color
b. green color
c. blue color
d. pink color
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Answer: (b).green color

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