BUMHS MDCAT 2025 Chemistry#Alkynes#Chemistry of Hydrocarbons3001Choose the best answerAn internal alkyne is treated with Lindlar catalyst and hydrogen. The major product is: (BUMHS MDCAT 2025)ATrans- alkeneBCis-alkeneCalkaneDvinyl chloride Like 0 Discuss 0Share
Atomic StructureIsobars3002Choose the best answerWhich one of the following pairs represents isobars?A³₂He and ⁴₂HeB²⁴₁₂Mg and ²⁵₁₂MgC⁴⁰₁₉K and ⁴⁰₂₀CaD³⁹₁₉K and ⁴⁰₁₉K Like 0 Discuss 0Share
Industrial chemistry Industrial chemistry MCQS#Macromolecules#Proteins3003Choose the best answerWhat determines the primary structure of a protein?AThree-dimensional foldingBArrangement of multiple polypeptide chainsCSequence of amino acidsDFormation of α-helices only Like 0 Discuss 0Share
StoichiometryPercentage Yield3004Choose the best answerIn an experiment, 4 mol H₂O are decomposed and 2 mol H₂ are actually obtained: 2H₂O → 2H₂ + O₂ What is the percentage yield of H₂?A25%B50%C75%D100% Like 0 Discuss 0Share
Alkyl HalidesFactors Favoring E2 Elimination3005Choose the best answerWhich condition favors E2 elimination?ATertiary alkyl halide with water at low temperatureBPrimary alkyl halide with aqueous AgNO₃CAlkyl halide with alcoholic KOH and heatDTertiary alkyl halide with methanol under mild conditions Like 0 Discuss 0Share