Basic Concepts of ChemistryElements, Compounds and Mixtures1096Choose the best answerWhich of the following best describes a compound?ATwo or more elements physically mixedBTwo or more elements chemically combinedCA mixture of two or more substancesDA substance that can be separated by filtration Like 0 Discuss 0Share
LiquidsIntermolecular Forces in Liquids1097Choose the best answerIntermolecular forces in liquids are generally:ANegligibleBExtremely weakCModerately strongDAbsent Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Mass Comparison1098Choose the best answerElements A and B have atomic masses 10 u and 20 u. Which statement must be true?AA has half the number of protons of B.BA has half the number of neutrons of B.COne atom of B is twice as heavy as one atom of A.DAtomic masses of A and B are unrelated to their relative masses. Like 0 Discuss 0Share
Atomic StructureIsotopes1099Choose the best answerWhich statement is not true for isotopes of the same element?AThey have the same number of neutronsBThey have the same mass numberCThey have identical physical propertiesDAll of these Like 0 Discuss 0Share
Chemical EquilibriumFactors Affecting Equilibrium Constant1100Choose the best answerFor H₂(g) + I₂(g) ⇌ 2HI(g), increasing reactant concentration at constant temperature causes Kc to:AIncreaseBDecreaseCRemain unchangedDBecome zero Like 0 Discuss 0Share