Chemical Reactions Quiz
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Questions and Answers

Which type of chemical reaction is represented by the equation CaC2O4 → CaCO3 + CO?

  • b. Single displacement reaction
  • a. Decomposition reaction (correct)
  • c. Combustion reaction
  • d. Combination reaction

What is the product of the chemical reaction CaC2O4 → CaCO3 + CO?

  • d. CaC2O4 + CO
  • c. CO
  • a. CaC2O4
  • b. CaCO3 (correct)

What is the reactant in the chemical reaction CaC2O4 → CaCO3 + CO?

  • d. CaC2O4 + CO
  • c. CO
  • b. CaCO3
  • a. CaC2O4 (correct)

Which compound has a molecular weight of 126?

<p>K2SO4 (A)</p> Signup and view all the answers

What is the percentage composition of nitrogen in aniline (C6H5NH2)?

<p>28.57% (D)</p> Signup and view all the answers

What is the percentage composition of carbon in pentanol (C5H11OH)?

<p>80% (A)</p> Signup and view all the answers

Which reactant is always included in a combustion reaction?

<p>Oxygen (B)</p> Signup and view all the answers

What type of reaction is characterized by a substance reacting with oxygen to produce carbon dioxide and water?

<p>Combustion (D)</p> Signup and view all the answers

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