Chemistry of HydrocarbonsElectrophilic Aromatic Substitution896Choose the best answerBenzene mainly undergoes:AAddition reactionsBElectrophilic substitution reactionsCNucleophilic substitution reactionsDElimination reactions Like 1 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Ionization Energy#Periodic Trends897Choose the best answerAn ionic compound A⁺B⁻ is most likely to be formed when: (Sindh MDCAT 2019)AThe ionization energy of A is high and electron affinity of B is lowBThe ionization energy of A is low and electron affinity of B is highCBoth ionization energy of A and electron affinity of B are equalDBoth ionization energy of A and electron affinity of B are high Like 0 Discuss 0Share
GasesCharles's Law898Choose the best answerA gas occupies 300 mL at 37°C. It is cooled to −3°C at constant pressure. What is its final volume?A350 mLB270 mLC261 mLD135 mL Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Isomorphism#Solids899Choose the best answerQ.77 The two crystals NaNO₃ & CaCO₃ are both trigonal, they are:AIsomersBPolymorphsCAllotropesDIsomorph Like 0 Discuss 0Share
Basic Concepts of ChemistryElements, Compounds and Mixtures900Choose the best answerIn known elements, the maximum number is of:AMetalsBNon-metalsCMetalloidsDNone of these Like 1 Discuss 0Share