E-PolyLearning

1. Chemical formula of Zinc Hydroxide is
a. Zn(OH)₂
b. ZNO₂
c. Zn₂(OH)₃
d. ZnOH
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Answer: (a).Zn(OH)₂

2. Valency of Carbon (C) is
a. 1
b. 2
c. 3
d. 4
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Answer: (d).4

3. All are ionic compounds except
a. AgCl
b. HNO₃
c. NO₂
d. (NH₄)₂CO₃
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Answer: (c).NO₂

4. Molecular weight of propane (C₃H₈) is
a. 44.095g/mol
b. 40.01g/mol
c. 41.01g/mol
d. 46.02g/mol
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Answer: (a).44.095g/mol

5. Chemical formula of silver bromide is
a. Ag₂Br₃
b. AgBr
c. AgBrO
d. AgBr₃.H₂O
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Answer: (b).AgBr

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