Atomic StructureAufbau Principle and n + ℓ Rule221Choose the best answerAccording to the Aufbau principle, which subshell is filled first?A4dB5pC5sD4d and 5s simultaneously Like 0 Discuss 0Share
XIIMDCAT Chemistry Test#Benzene & Aromatic Compounds#Benzene Sulphonation222Choose the best answerWhat is the electrophile in the sulphonation of benzene?ASO₃+BSO₄²⁻CHSO₄+DSO₃ Like 1 Discuss 0Share
SINDH MDCAT 2018 Chemistry#Molarity#Stoichiometry223Choose the best answer106 grams of Na₂CO₃ per dm³ of solution of Na₂CO₃ in water, the concentration of the solution will be: (Sindh MDCAT 2018)A1NB0.1MC1MD0.02M Like 7 Discuss 0Share1
MDCAT Chemistry Paper 2025#Magnetic Properties#Transition Elements224Choose the best answerWhich of the following is expected to be the most paramagnetic? (IBA MDCAT 2025)A³LiB⁴BeC⁵BD⁶C Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Combustion Stoichiometry#Stoichiometry225Choose the best answerQ.101 3.0 g of C on combustion gives C + O₂ → CO₂.A5.5 g of CO₂B22 g of CO₂C6.02 × 10²³ molecules of CO₂D1.505 × 10²³ molecules of CO₂ Like 0 Discuss 0Share