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Nda Chemistry Chemical Reactions Quiz
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Nda Chemistry Chemical Reactions Quiz
Quiz
Question 1. Sigma (σ) bonds are formed due to:
Sidewise overlap of orbitals
Head-on overlap of orbitals
Metallic interaction
Electrostatic attraction
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Question 2. Which of the following is a decomposition reaction?
2H₂ + O₂ → 2H₂O
2KClO₃ → 2KCl + 3O₂
NaOH + HCl → NaCl + H₂O
Fe + CuSO₄ → FeSO₄ + Cu
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Question 3. Rusting of iron is an example of:
Combination reaction
Decomposition reaction
Redox reaction
Double displacement reaction
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Question 4. Which reaction is known as a neutralization reaction?
CaCO₃ → CaO + CO₂
Fe + CuSO₄ → FeSO₄ + Cu
HCl + NaOH → NaCl + H₂O
2Mg + O₂ → 2MgO
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Question 5. The reaction 2H₂ + O₂ → 2H₂O is an example of:
Decomposition reaction
Combination reaction
Double displacement reaction
Redox reaction
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Question 6. The displacement reaction is best represented by:
2H₂O₂ → 2H₂O + O₂
Zn + CuSO₄ → ZnSO₄ + Cu
2H₂ + O₂ → 2H₂O
NaOH + HCl → NaCl + H₂O
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Question 7. Which of the following is an endothermic reaction?
C + O₂ → CO₂
H₂ + Cl₂ → 2HCl
Photosynthesis
CH₄ + 2O₂ → CO₂ + 2H₂O
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Question 8. The reaction between silver nitrate and sodium chloride gives:
NaNO₃ + AgCl
NaClO + AgNO₃
NaAg + NO₃Cl
AgCl₂ + NaNO₂
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Question 9. The reaction CaO + H₂O → Ca(OH)₂ is:
Decomposition reaction
Combination reaction
Displacement reaction
Neutralization reaction
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Question 10. Which type of reaction takes place during electrolysis of water?
Combination reaction
Decomposition reaction
Double displacement reaction
Neutralization reaction
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