E-PolyLearning

1. When an acid (H+) is added to alkali (OH-), product is
a. hydroxides
b. water
c. salts
d. hydrogen gas
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Answer: (c).salts

2. K₂O + H₂O →
a. K(OH)₃
b. KOH
c. KOH.H₂O
d. KO + H₂ + O₂
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Answer: (b).KOH

3. Mineral acids are
a. naturally occurring
b. man made
c. include malic acid
d. include formic acid
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Answer: (a).naturally occurring

4. Excess acidity caused by acid rain can be neutralized by adding
a. more fertilizers
b. by removing the acidified soil
c. by adding P₂O₅
d. by adding lime
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Answer: (d).by adding lime

5. More corrosive acid is
a. H₂CO₃
b. H₂SO₃
c. HNO₃
d. C₆H₈O₇
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Answer: (c).HNO₃

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