Identify The Type Of Reaction Given
Questions and Answers
- 1.
Mg + 2HCl ---> MgCl2 + H2 is what type of reaction?
- A.
Combination
- B.
Decomposition
- C.
Single Replacement
- D.
Double Replacement
- E.
Combustion
Correct Answer
C. Single ReplacementExplanation
The given reaction, Mg + 2HCl -> MgCl2 + H2, is a single replacement reaction. In this type of reaction, one element replaces another element in a compound. Here, magnesium (Mg) replaces hydrogen (H) in hydrochloric acid (HCl) to form magnesium chloride (MgCl2) and hydrogen gas (H2).Rate this question:
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- 2.
F2 + BaCl2 ---> BaF2 + Cl2 is what type of reaction?
- A.
Combination
- B.
Decomposition
- C.
Single Replacement
- D.
Double Replacement
- E.
Combustion
Correct Answer
C. Single ReplacementExplanation
In the given reaction, F2 (fluorine gas) is replacing Cl2 (chlorine gas) in the compound BaCl2 (barium chloride), resulting in the formation of BaF2 (barium fluoride). This type of reaction, where one element replaces another in a compound, is known as a single replacement reaction.Rate this question:
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- 3.
AgNO3 + NaCl ---> AgCl + NaNO3 is what type of reaction?
- A.
Combination
- B.
Decomposition
- C.
Single Replacement
- D.
Double Replacement
- E.
Combustion
Correct Answer
D. Double ReplacementExplanation
The given reaction, AgNO3 + NaCl → AgCl + NaNO3, is a double replacement reaction. In this type of reaction, the positive ions of two compounds switch places to form two new compounds. In this case, the silver ion (Ag+) from silver nitrate (AgNO3) combines with the chloride ion (Cl-) from sodium chloride (NaCl) to form silver chloride (AgCl), while the sodium ion (Na+) from sodium chloride combines with the nitrate ion (NO3-) from silver nitrate to form sodium nitrate (NaNO3).Rate this question:
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- 4.
PbO2 + 4KI ---> 2K2O + PbI4 is what type of reaction?
- A.
Combination
- B.
Decomposition
- C.
Single Replacement
- D.
Double Replacement
- E.
Combustion
Correct Answer
D. Double ReplacementExplanation
The given reaction is a double replacement reaction because the positive ions in the reactants (Pb and K) exchange places to form new compounds (K2O and PbI4) in the products.Rate this question:
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- 5.
2H2 + O2 ---> 2H2O is what type of reaction?
- A.
Combination
- B.
Decomposition
- C.
Single Replacement
- D.
Double Replacement
- E.
Combustion
Correct Answer
A. CombinationExplanation
The given chemical equation, 2H2 + O2 --> 2H2O, represents a combination reaction. In this reaction, two molecules of hydrogen gas (H2) combine with one molecule of oxygen gas (O2) to form two molecules of water (H2O). Combination reactions involve the merging of two or more substances to form a single compound.Rate this question:
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- 6.
2Na + Cl2 ---> 2NaCl is what type of reaction?
- A.
Combination
- B.
Decomposition
- C.
Single Replacement
- D.
Double Replacement
- E.
Combustion
Correct Answer
A. CombinationExplanation
The given reaction 2Na + Cl2 -> 2NaCl is a combination reaction. In a combination reaction, two or more substances combine to form a single product. In this case, sodium (Na) reacts with chlorine (Cl2) to form sodium chloride (NaCl).Rate this question:
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- 7.
2H2O ---> 2H2 + O2 is what type of reaction?
- A.
Combination
- B.
Decomposition
- C.
Single Replacement
- D.
Double Replacement
- E.
Combustion
Correct Answer
B. DecompositionExplanation
The given chemical equation represents a decomposition reaction. In this type of reaction, a compound breaks down into simpler substances. In this case, water (H2O) decomposes into hydrogen gas (H2) and oxygen gas (O2).Rate this question:
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- 8.
2NH3 ---> 3H2 + N2 is what type of reaction?
- A.
Combination
- B.
Decomposition
- C.
Single Replacement
- D.
Double Replacement
- E.
Combustion
Correct Answer
B. DecompositionExplanation
The reaction 2NH3 → 3H2 + N2 is a decomposition reaction. In a decomposition reaction, a single compound breaks down into two or more simpler substances. In this case, ammonia (NH3) breaks down into hydrogen gas (H2) and nitrogen gas (N2).Rate this question:
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- 9.
CH4 + 2O2 ---> CO2 + 2H2O is what type of reaction?
- A.
Combination
- B.
Decomposition
- C.
Single Replacement
- D.
Double Replacement
- E.
Combustion
Correct Answer
E. CombustionExplanation
The given chemical equation represents a combustion reaction. In a combustion reaction, a fuel (in this case, CH4) reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). This reaction is characterized by the release of a large amount of heat and light energy.Rate this question:
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- 10.
C6H12O6 + 6O2 ---> 6CO2 + 6H2O is what type of reaction?
- A.
Combination
- B.
Decomposition
- C.
Single Replacement
- D.
Double Replacement
- E.
Combustion
Correct Answer
E. CombustionExplanation
The given chemical equation represents a combustion reaction. In a combustion reaction, a substance reacts with oxygen to produce carbon dioxide and water. In this equation, glucose (C6H12O6) reacts with oxygen (O2) to form carbon dioxide (CO2) and water (H2O). The presence of oxygen and the formation of carbon dioxide and water are characteristic of a combustion reaction.Rate this question:
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Mar 21, 2023Quiz Edited by
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Jan 25, 2012Quiz Created by
FrankWoody
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