CBSE · Class 11 · Chemistry · HydrocarbonsWhich reagent is used to convert alkynes to cis-alkenes?
Step-by-Step Solution
Catalytic hydrogenation of alkynes using Lindlar's catalyst (palladised charcoal deactivated with quinoline or sulfur compounds) adds hydrogen in a syn-addition manner, specifically yielding cis-alkenes.
Detailed Options Breakdown
Option : Sodium in liquid ammonia
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Hydrocarbons.
Option 1: Lindlar's catalyst (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: Zinc and hydrochloric acid
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Hydrocarbons.
Option 3: Red hot iron tube
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Hydrocarbons.
💡 Study Guide: This question tests core syllabus concepts from Hydrocarbons. For formulas, key summaries, and mock exam reference guides, read the full Hydrocarbons Revision Notes.