Chemical Reactions and Equations MCQs with Answers

AdminJune 1, 2022

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What is the product of the reaction between sodium and chlorine gas?
a) Sodium chloride
b) Sodium oxide
c) Sodium hydroxide
d) Sodium sulfate
Answer: a) Sodium chloride

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
Answer: c) 2H2 + O2 → 2H2O

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
Answer: a) HCl + NaOH → NaCl + H2O

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
Answer: a) AgNO3 + NaCl → AgCl + NaNO3

What is the product of the reaction between sulfuric acid and potassium hydroxide?
a) H2SO4
b) K2SO4
c) H2O
d) KOH
Answer: b) K2SO4

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
Answer: c) 2Mg + O2 → 2MgO

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
Answer: c) CaCO3 → CaO + CO2

What is the product of the reaction between hydrochloric acid and magnesium?
a) MgCl2
b) H2MgCl2
c) MgHCl
d) H2Mg
Answer: a) MgCl2

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
Answer: b) CaCO3 → CaO + CO2

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
Answer: a) H2SO4 + Ca(OH)2 → CaSO4 + 2H2O

What is the product of the reaction between aluminum and hydrochloric acid?
a) AlCl3
b) HAlCl3
c) AlHCl
d) H3Al
Answer: a) AlCl3

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
Answer: 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
Answer: b) KNO3

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
Answer: c) 2Fe + O2 → 2FeO

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
Answer: a) AgNO3 + NaCl → AgCl + NaNO3

What is the product of the reaction between hydrochloric acid and aluminum?
a) AlCl3
b) HAlCl3
c) AlHCl
d) H3Al
Answer: a) AlCl3

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
Answer: b) NaOH + HCl → NaCl + H2O

What is the product of the reaction between sulfuric acid and sodium hydroxide?
a) Na2SO4
b) H2SO4
c) H2O
d) NaOH
Answer: a) Na2SO4

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
Answer: c) Zn + 2HCl → ZnCl2 + H2

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
Answer: b) NaOH + HCl → NaCl + H2O

What is the product of the reaction between hydrochloric acid and zinc?
a) ZnCl2
b) H2ZnCl2
c) ZnHCl
d) H2Zn
Answer: a) ZnCl2

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
Answer: c) 2H2 + O2 → 2H2O

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
Answer: a) HCl + KOH → KCl + H2O

What is the product of the reaction between sulfuric acid and magnesium hydroxide?
a) H2SO4
b) MgSO4
c) H2O
d) MgOH
Answer: b) MgSO4

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
Answer: c) 2Al + O2 → 2AlO

What is the product of the reaction between hydrochloric acid and calcium?
a) CaCl2
b) HCaCl2
c) CaHCl
d) H2Ca
Answer: a) CaCl2

What is the product of the reaction between nitric acid and calcium hydroxide?
a) HNO3
b) CaNO3
c) H2O
d) Ca(OH)2
Answer: 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
Answer: c) 2Fe + O2 → 2FeO

What is the product of the reaction between hydrochloric acid and iron?
a) FeCl2
b) H2FeCl2
c) FeHCl
d) H2Fe
Answer: a) FeCl2

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
Answer: 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
Answer: b) NaNO3

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
Answer: c) 2Cu + O2 → 2CuO

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
Answer: b) NaOH + HCl → NaCl + H2O

What is the product of the reaction between hydrochloric acid and copper?
a) CuCl2
b) H2CuCl2
c) CuHCl
d) H2Cu
Answer: a) CuCl2

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
Answer: b) CaCO3 → CaO + CO2