StoichiometryMass–Mole Stoichiometry1276Choose the best answerAn 8 g sample of CH₄ burns completely: CH₄ + 2O₂ → CO₂ + 2H₂O How many moles of H₂O are produced?A0.5 molB0.25 molC1.0 molD2.0 mol Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Electron Energy1277Choose the best answerThe total energy of an electron in an atom is the sum of which two energies?AKinetic and potential energiesBCentrifugal and electrostatic forcesCAngular momentum and frequencyDMass number and atomic number Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Atomic Structure#Electronic Configuration1278Choose the best answerWhen 5d orbital is complete, the entering electron will go to: (Sindh MDCAT 2019)A6sB6pC5pD4f Like 0 Discuss 0Share
LiquidsHydrogen Bonding and Boiling Point1279Choose the best answerWhich compound has the highest boiling point?ANH₃BCH₄CH₂ODHF Like 0 Discuss 0Share
Atomic StructureAufbau Principle1280Choose the best answerWhich principle states that electrons occupy lower-energy orbitals before higher-energy orbitals?APauli exclusion principleBAufbau principleCHund's ruleDHeisenberg uncertainty principle Like 0 Discuss 0Share