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Chemical Reactions and Equations Online MCQs with Answers
What is the product of the reaction between sodium and chlorine gas?
a) Sodium chloride
b) Sodium oxide
c) Sodium hydroxide
d) Sodium sulfate
Which of the following is a combustion reaction?
a) Fe + HCl → FeCl2 + H2
b) CaCO3 → CaO + CO2
c) 2H2 + O2 → 2H2O
d) AgNO3 + NaCl → AgCl + NaNO3
What is the balanced equation for the reaction between hydrochloric acid and sodium hydroxide?
a) HCl + NaOH → NaCl + H2O
b) H2SO4 + 2NaOH → Na2SO4 + 2H2O
c) HNO3 + KOH → KNO3 + H2O
d) H2O + CO2 → H2CO3
Which of the following is an example of a redox reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) NaOH + HCl → NaCl + H2O
c) CaCO3 → CaO + CO2
d) 2H2 + O2 → 2H2O
What is the product of the reaction between sulfuric acid and potassium hydroxide?
a) H2SO4
b) K2SO4
c) H2O
d) KOH
What is the balanced equation for the reaction between magnesium and oxygen gas?
a) MgO + H2O → Mg(OH)2
b) MgO2 → Mg + O2
c) 2Mg + O2 → 2MgO
d) Mg + O2 → MgO2
Which of the following is an example of a decomposition reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) 2H2 + O2 → 2H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and magnesium?
a) MgCl2
b) H2MgCl2
c) MgHCl
d) H2Mg
Which of the following is a synthesis reaction?
a) Fe + HCl → FeCl2 + H2
b) CaCO3 → CaO + CO2
c) 2H2 + O2 → 2H2O
d) AgNO3 + NaCl → AgCl + NaNO3
What is the balanced equation for the reaction between sulfuric acid and calcium hydroxide?
a) H2SO4 + Ca(OH)2 → CaSO4 + 2H2O
b) HCl + NaOH → NaCl + H2O
c) 2H2 + O2 → 2H2O
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between aluminum and hydrochloric acid?
a) AlCl3
b) HAlCl3
c) AlHCl
d) H3Al
Which of the following is an example of a displacement reaction?
a) Fe + HCl → FeCl2 + H2
b) CaCO3 → CaO + CO2
c) 2H2 + O2 → 2H2O
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between nitric acid and potassium hydroxide?
a) HNO3
b) KNO3
c) H2O
d) KOH
What is the balanced equation for the reaction between iron and oxygen gas?
a) FeO + H2O → Fe(OH)2
b) FeO2 → Fe + O2
c) 2Fe + O2 → 2FeO
d) Fe + O2 → FeO2
Which of the following is an example of a precipitation reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) 2H2 + O2 → 2H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and aluminum?
a) AlCl3
b) HAlCl3
c) AlHCl
d) H3Al
Which of the following is an example of a double displacement reaction?
a) Fe + HCl → FeCl2 + H2
b) NaOH + HCl → NaCl + H2O
c) CaCO3 → CaO + CO2
d) 2H2 + O2 → 2H2O
What is the product of the reaction between sulfuric acid and sodium hydroxide?
a) Na2SO4
b) H2SO4
c) H2O
d) NaOH
What is the balanced equation for the reaction between zinc and hydrochloric acid?
a) ZnCl2 + H2O → Zn(OH)2
b) ZnO2 → Zn + O2
c) Zn + 2HCl → ZnCl2 + H2
d) Zn + HCl → ZnHCl
Which of the following is an example of a neutralization reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) NaOH + HCl → NaCl + H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and zinc?
a) ZnCl2
b) H2ZnCl2
c) ZnHCl
d) H2Zn
Which of the following is an example of a combustion reaction?
a) Fe + HCl → FeCl2 + H2
b) CaCO3 → CaO + CO2
c) 2H2 + O2 → 2H2O
d) AgNO3 + NaCl → AgCl + NaNO3
What is the balanced equation for the reaction between hydrochloric acid and potassium hydroxide?
a) HCl + KOH → KCl + H2O
b) H2SO4 + 2KOH → K2SO4 + 2H2O
c) HNO3 + NaOH → NaNO3 + H2O
d) H2O + CO2 → H2CO3
What is the product of the reaction between sulfuric acid and magnesium hydroxide?
a) H2SO4
b) MgSO4
c) H2O
d) MgOH
What is the balanced equation for the reaction between aluminum and oxygen gas?
a) AlO + H2O → Al(OH)2
b) AlO2 → Al + O2
c) 2Al + O2 → 2AlO
d) Al + O2 → AlO2
Which of the following is an example of a decomposition reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) 2H2 + O2 → 2H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and calcium?
a) CaCl2
b) HCaCl2
c) CaHCl
d) H2Ca
Which of the following is an example of a redox reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) NaOH + HCl → NaCl + H2O
c) CaCO3 → CaO + CO2
d) 2H2 + O2 → 2H2O
What is the product of the reaction between nitric acid and calcium hydroxide?
a) HNO3
b) CaNO3
c) H2O
d) Ca(OH)2
What is the balanced equation for the reaction between iron and oxygen gas?
a) FeO + H2O → Fe(OH)2
b) FeO2 → Fe + O2
c) 2Fe + O2 → 2FeO
d) Fe + O2 → FeO2
Which of the following is an example of a precipitation reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) 2H2 + O2 → 2H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and iron?
a) FeCl2
b) H2FeCl2
c) FeHCl
d) H2Fe
Which of the following is an example of a displacement reaction?
a) Fe + HCl → FeCl2 + H2
b) CaCO3 → CaO + CO2
c) 2H2 + O2 → 2H2O
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between nitric acid and sodium hydroxide?
a) HNO3
b) NaNO3
c) H2O
d) NaOH
What is the balanced equation for the reaction between copper and oxygen gas?
a) CuO + H2O → Cu(OH)2
b) CuO2 → Cu + O2
c) 2Cu + O2 → 2CuO
d) Cu + O2 → CuO2
Which of the following is an example of a double displacement reaction?
a) Fe + HCl → FeCl2 + H2
b) NaOH + HCl → NaCl + H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and copper?
a) CuCl2
b) H2CuCl2
c) CuHCl
d) H2Cu
Which of the following is an example of a synthesis reaction?
a) Fe + HCl → FeCl2 + H2
b) CaCO3 → CaO + CO2
c) 2H2 + O2 → 2H2O
d) AgNO3 + NaCl → AgCl + NaNO3
What is the balanced equation for the reaction between hydrochloric acid and sodium hydroxide?
a) HCl + NaOH → NaCl + H2O
b) H2SO4 + 2NaOH → Na2SO4 + 2H2O
c) HNO3 + KOH → KNO3 + H2O
d) H2O + CO2 → H2CO3
What is the product of the reaction between sulfuric acid and potassium hydroxide?
a) H2SO4
b) K2SO4
c) H2O
d) KOH
What is the balanced equation for the reaction between magnesium and oxygen gas?
a) MgO + H2O → Mg(OH)2
b) MgO2 → Mg + O2
c) 2Mg + O2 → 2MgO
d) Mg + O2 → MgO2
Which of the following is an example of a decomposition reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) 2H2 + O2 → 2H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and magnesium?
a) MgCl2
b) H2MgCl2
c) MgHCl
d) H2Mg
Which of the following is an example of a displacement reaction?
a) Fe + HCl → FeCl2 + H2
b) CaCO3 → CaO + CO2
c) 2H2 + O2 → 2H2O
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between nitric acid and potassium hydroxide?
a) HNO3
b) KNO3
c) H2O
d) KOH
What is the balanced equation for the reaction between iron and oxygen gas?
a) FeO + H2O → Fe(OH)2
b) FeO2 → Fe + O2
c) 2Fe + O2 → 2FeO
d) Fe + O2 → FeO2
Which of the following is an example of a precipitation reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) 2H2 + O2 → 2H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and aluminum?
a) AlCl3
b) HAlCl3
c) AlHCl
d) H3Al
Which of the following is an example of a double displacement reaction?
a) Fe + HCl → FeCl2 + H2
b) NaOH + HCl → NaCl + H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between sulfuric acid and sodium hydroxide?
a) Na2SO4
b) H2SO4
c) H2O
d) NaOH
What is the balanced equation for the reaction between zinc and hydrochloric acid?
a) ZnCl2 + H2O → Zn(OH)2
b) ZnO2 → Zn + O2
c) Zn + 2HCl → ZnCl2 + H2
d) Zn + HCl → ZnHCl
Which of the following is an example of a neutralization reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) NaOH + HCl → NaCl + H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and zinc?
a) ZnCl2
b) H2ZnCl2
c) ZnHCl
d) H2Zn
Which of the following is an example of a combustion reaction?
a) Fe + HCl → FeCl2 + H2
b) CaCO3 → CaO + CO2
c) 2H2 + O2 → 2H2O
d) AgNO3 + NaCl → AgCl + NaNO3
What is the balanced equation for the reaction between hydrochloric acid and potassium hydroxide?
a) HCl + KOH → KCl + H2O
b) H2SO4 + 2KOH → K2SO4 + 2H2O
c) HNO3 + NaOH → NaNO3 + H2O
d) H2O + CO2 → H2CO3
What is the product of the reaction between sulfuric acid and magnesium hydroxide?
a) H2SO4
b) MgSO4
c) H2O
d) MgOH
What is the balanced equation for the reaction between aluminum and oxygen gas?
a) AlO + H2O → Al(OH)2
b) AlO2 → Al + O2
c) 2Al + O2 → 2AlO
d) Al + O2 → AlO2
Which of the following is an example of a decomposition reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) 2H2 + O2 → 2H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and copper?
a) CuCl2
b) H2CuCl2
c) CuHCl
d) H2Cu
Which of the following is an example of a displacement reaction?
a) Fe + HCl → FeCl2 + H2
b) CaCO3 → CaO + CO2
c) 2H2 + O2 → 2H2O
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between nitric acid and potassium hydroxide?
a) HNO3
b) KNO3
c) H2O
d) KOH
What is the balanced equation for the reaction between iron and oxygen gas?
a) FeO + H2O → Fe(OH)2
b) FeO2 → Fe + O2
c) 2Fe + O2 → 2FeO
d) Fe + O2 → FeO2
Which of the following is an example of a precipitation reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) 2H2 + O2 → 2H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and aluminum?
a) AlCl3
b) HAlCl3
c) AlHCl
d) H3Al
Which of the following is an example of a double displacement reaction?
a) Fe + HCl → FeCl2 + H2
b) NaOH + HCl → NaCl + H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between sulfuric acid and sodium hydroxide?
a) Na2SO4
b) H2SO4
c) H2O
d) NaOH
What is the balanced equation for the reaction between zinc and hydrochloric acid?
a) ZnCl2 + H2O → Zn(OH)2
b) ZnO2 → Zn + O2
c) Zn + 2HCl → ZnCl2 + H2
d) Zn + HCl → ZnHCl
Which of the following is an example of a neutralization reaction?
a) AgNO3 + NaCl → AgCl + NaNO3
b) NaOH + HCl → NaCl + H2O
c) CaCO3 → CaO + CO2
d) 2Na + Cl2 → 2NaCl
What is the product of the reaction between hydrochloric acid and zinc?
a) ZnCl2
b) H2ZnCl2
c) ZnHCl
d) H2Zn
Which of the following is an example of a combustion reaction?
a) Fe + HCl → FeCl2 + H2
b) CaCO3 → CaO + CO2
c) 2H2 + O2 → 2H2O
d) AgNO3 + NaCl → AgCl + NaNO3