Periodic TableIonization Energy Trend246Choose the best answerAmong the following Period 3 elements, which has the highest first ionization energy?ANaBMgCAlDSi Like 0 Discuss 0Share
Chemical EquilibriumMagnitude of Equilibrium Constant and Stability247Choose the best answerWhich nitrogen oxide is most stable against decomposition according to the following decomposition equilibrium constants?A2NO₂ ⇌ N₂ + 2O₂; K = 6.7 × 10⁻¹⁶B2NO ⇌ N₂ + O₂; K = 2.2 × 10⁻³⁰C2N₂O₅ ⇌ 2N₂ + 5O₂; K = 1.2 × 10⁻³⁴D2N₂O ⇌ 2N₂ + O₂; K = 3.5 × 10⁻³³ Like 0 Discuss 0Share
GasesMolecular Motions of Gases248Choose the best answerMolecules of a polyatomic gas can exhibit:ATranslational motion onlyBRotational motion onlyCTranslational, rotational and vibrational motionDVibrational motion only Like 0 Discuss 0Share
Atomic StructureSubatomic Particles249Choose the best answerThe number of types of nucleons present in an atomic nucleus is:AMore than 100B3C2D100 Like 0 Discuss 0Share
MDCAT Chemistry Paper 2025#Chemical Kinetics#Instantaneous Rate250Choose the best answerAt start of reaction: (IBA MDCAT 2025)AAverage rate is highBInstantaneous rate is highCBoth rates are sameDBoth rates are slow Like 3 Discuss 0Share