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ICSE Class 10 Chemistry 2023 Paper

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Question : 16 of 88
Marks: +1, -0
Match the Column A with Column B :
  Column A  Column B
 (a) Sodium chloride  1. has two shared pair of electrons
 (b) Methane  2. has high melting and boiling points
 (c) Hydrogen chloride gas  3. a greenhouses gas
 (d) Oxidation reaction  4. has low melting and boiling points
 (e) Water  5. Zn−2e−→Zn2+\mathrm{Zn} - 2e^{-} \rightarrow \mathrm{Zn}^{2+}
   6. S+2e−→S2−\mathrm{S} + 2e^{-} \rightarrow \mathrm{S}^{2-}
Solution:  
  Column A  Column B
 (a) Sodium chloride  2. has high melting and boiling points
 (b) Methane  3. a greenhouses gas
 (c) Hydrogen chloride gas  4. has low melting and boiling points
 (d) Oxidation reaction  5. Zn−2e−→Zn2+\mathrm{Zn} - 2e^{-} \rightarrow \mathrm{Zn}^{2+}
 (e) Water  1. has two shared pair of electrons
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