Chemical EquilibriumEffect of Temperature on Equilibrium1516Choose the best answerFor A + B + heat ⇌ C + D, increasing temperature causes the concentration of products to:AIncreaseBDecreaseCRemain unchangedDBecome zero Like 0 Discuss 0Share
Chemistry of HydrocarbonsDirective Influence of Substituents1517Choose the best answerWhich group is ortho-para directing but deactivating toward electrophilic aromatic substitution?A–CH₃B–ClC–NH₂D–OH Like 1 Discuss 0Share
Periodic TableGroup 13 Ionization Energy Trend1518Choose the best answerThe correct decreasing order of first ionization energy among Group 13 elements is:AB > Tl > Ga > Al > InBB > Ga > Tl > Al > InCTl > B > Ga > In > AlDB > Al > Ga > In > Tl Like 0 Discuss 0Share
Chemical BondingMolecular Geometry and VSEPR Theory1519Choose the best answerThe molecular shape of H₃O⁺ is:APlanarBSee-sawCTrigonal planarDTrigonal pyramidal Like 0 Discuss 0Share
Atomic StructureQuantum Numbers1520Choose the best answerWhich set of quantum numbers is valid for an electron in a 4f orbital?An = 4, ℓ = 3, mℓ = +1, mₛ = +½Bn = 4, ℓ = 4, mℓ = −4, mₛ = −½Cn = 4, ℓ = 3, mℓ = +4, mₛ = +½Dn = 3, ℓ = 2, mℓ = −2, mₛ = +½ Like 0 Discuss 0Share