Sindh MDCAT 2020 Chemistry#Alkanes#Chemistry of Hydrocarbons1211Choose the best answerGeneral formula of cycloalkane is: (Sindh MDCAT 2020)ACₙH₂ₙ₊₂BCₙH₂ₙCCₙH₂ₙ₊₁DCₙH₂ₙ₋₂ Like 0 Discuss 0Share
LiquidsVaporization1212Choose the best answerVaporization is always:AEndothermicBExothermicCNeither endothermic nor exothermicDA nuclear process Like 0 Discuss 0Share
SZABMU MDCAT 2025 Chemistry#Chemical Bonding#Sigma and Pi Bonds1213Choose the best answerHow many σ and π bonds are present in maleic anhydride? (SZABMU MDCAT 2025)A5 σ 3 πB6 σ 3 πC7 σ 2 πD9 σ 3 π Like 0 Discuss 0Share
StoichiometryMolar Volume and Number of Moles1214Choose the best answerWhich sample contains the greatest number of moles?A11.2 dm³ H₂ at STPB44.8 dm³ N₂ at STPC67.2 dm³ CO₂ at STPD22.4 dm³ O₂ at STP Like 0 Discuss 0Share
Periodic TableShielding Effect1215Choose the best answerAcross a period, shielding remains nearly constant because added electrons enter:ANew inner shellsBOrbitals much closer to the nucleusCThe same principal shellDCompletely filled d-orbitals Like 0 Discuss 0Share