Sindh MDCAT 2021 Chemistry#Alkynes#Chemistry of Hydrocarbons76Choose the best answerThe number of acidic hydrogen present in 1-butyne:A1B2C3D4 Like 0 Discuss 0Share
Chemistry of HydrocarbonsPreparation of Benzene by Decarboxylation77Choose the best answerSodium benzoate on heating with soda lime produces:ATolueneBBenzeneCPhenolDBenzoic acid Like 0 Discuss 0Share
Chemistry of HydrocarbonsAromaticity and Stability of Benzene78Choose the best answerThe unusual stability of benzene is mainly due to:AHyperconjugation onlyBResonance and aromatic delocalizationCHydrogen bondingDInductive effect only Like 0 Discuss 0Share
Chemistry of HydrocarbonsNitration of Benzene79Choose the best answerWhich reagent mixture is used for nitration of benzene?AConcentrated HNO₃ + concentrated H₂SO₄BHCl + HNO₃CH₂SO₄ + HClDHNO₃ + NaOH Like 0 Discuss 0Share
Chemistry of HydrocarbonsElectrophilic Aromatic Substitution80Choose the best answerBenzene mainly undergoes:AAddition reactionsBElectrophilic substitution reactionsCNucleophilic substitution reactionsDElimination reactions Like 0 Discuss 0Share