Addition and Reduction Reactions of Alkynes

JEE Main Chemistry · Hydrocarbons · 8 questions, latest first

• An optically active alkyl bromide C_4 H_9 Br, reacts with ethanolic KOH to form major compound [A] which reacts with bromine to…20266 April, Shift 2 · Q65
• Consider the following reactions. Total number of electrons in the π bonds and lone pair of electrons in the product (X) is:20266 April, Shift 2 · Q69
• But-2-yne and hydrogen (one mole each) are separately treated with (i) Pd/C and (ii) Na/liq. NH_3 to give the products X and Y…202623 January, Shift 1 · Q65
• 'P' is20258 April, Shift 2 · Q65
• An optically active alkyl halide C_4 H_9 Br[A] reacts with hot KOH dissolved in ethanol and forms alkene [B] as major product…20252 April, Shift 1 · Q66
• In the given reactions identify A and B20241 February, Shift 2 · Q75
• But-2-yne is reacted separately with one mole of Hydrogen as shown below: B ←[ liq NH_3]Na +H_2CH_3-C ≡ C-CH_3 →[Δ]Pd / C A A. A…20231 February, Shift 1 · Q48
• Choose the correct set of reagents for the following conversion. trans (Ph-CH=CH-CH_3) → cis (Ph-CH=CH-CH_3)202331 January, Shift 1 · Q43