Question:
Which of the following shows addition reaction?
Which of the following shows addition reaction?
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Alkenes and alkynes undergo addition reactions because of the presence of multiple bonds. Alkanes mainly undergo substitution reactions.
Updated On: Jun 9, 2026
- \(CH_4\)
- \(C_3H_8\)
- \(C_2H_6\)
- \(C_2H_4\)
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The Correct Option is D
Solution and Explanation
Concept:
Addition reactions are characteristic reactions of unsaturated hydrocarbons. Unsaturated compounds contain at least one double bond or triple bond between carbon atoms.
Step 1: Classify the given compounds.
\[ CH_4 \] is methane and contains only single bonds. \[ C_2H_6 \] is ethane and also contains only single bonds. \[ C_3H_8 \] is propane and is likewise a saturated hydrocarbon. All these compounds belong to the alkane family.
Step 2: Identify the unsaturated compound.
\[ C_2H_4 \] is ethene. Its structure contains a carbon-carbon double bond: \[ CH_2 = CH_2 \] The double bond can break and allow atoms or groups to add across it.
Step 3: Illustrate an addition reaction.
Hydrogen can add across the double bond: \[ C_2H_4 + H_2 \rightarrow C_2H_6 \] This is a typical addition reaction. Therefore, \[ \boxed{C_2H_4} \]
Step 1: Classify the given compounds.
\[ CH_4 \] is methane and contains only single bonds. \[ C_2H_6 \] is ethane and also contains only single bonds. \[ C_3H_8 \] is propane and is likewise a saturated hydrocarbon. All these compounds belong to the alkane family.
Step 2: Identify the unsaturated compound.
\[ C_2H_4 \] is ethene. Its structure contains a carbon-carbon double bond: \[ CH_2 = CH_2 \] The double bond can break and allow atoms or groups to add across it.
Step 3: Illustrate an addition reaction.
Hydrogen can add across the double bond: \[ C_2H_4 + H_2 \rightarrow C_2H_6 \] This is a typical addition reaction. Therefore, \[ \boxed{C_2H_4} \]
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