Chemical Reaction
Authored by jerry cespon
Chemistry
10th Grade
Used 4+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which of the following is an example of Combination Reaction?
C + O₂ → CO₂
NH₄NO₃ → N₂O + 2H₂O
2HCO₃ → H₂O + CO₂ + CO
2H₂O₂ → 2H₂O + O₂
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which of the following is an example of combination reaction?
2H₂O₂ → 2H₂O + O₂
2KMnO₄ → K₂MnO₄ + MnO₂ + O₂
Ca + O₂ → CaO
CaCO₃ → CaO + CO₂
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which chemical reaction combines nitrogen gas (N₂) with three molecules of hydrogen gas (H₂) to produce two molecules of ammonia (NH₃), which is widely used in fertilizers and various chemical processes.
C + O₂ → CO₂
N₂ + 3H₂ → 2NH₃
Na + Cl₂ → 2NaCl
all of the above
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which of the following is an example of decomposition reaction?
2Na + Cl₂ → 2NaCl
C + O₂ → CO₂
2Mg + O₂ → 2MgO
2H₂O₂ → 2H₂O + O₂
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which of the following is an example of decomposition reaction?
NaN₃ → Na + N₂
Na + Cl₂ → 2NaCl
Fe + S → FeS
Cu + S → CuS
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
This reaction is commonly used in cold packs and fireworks. Which chemical reaction happens in thermal decomposition of ammonium nitrate?
N₂ + 3H₂ → 2NH₃
2Ca + O₂ → 2CaO
NH₄NO₃ → N₂O + 2H₂O
4K + O₂ → 2K₂O
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which of the following poster shows importance of chemical reaction?
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