Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Photon Energy376Choose the best answerIn ΔE = E₂ − E₁ = hν, what does ν represent?APlanck’s constantBFrequency of radiationCWave numberDAngular momentum Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryFunctional Groups377Choose the best answerWhich functional group has the highest priority in IUPAC nomenclature?AAlcoholBAldehydeCCarboxylic acidDKetone Like 61 Discuss 0Share4
Alcohols and PhenolsPositional Isomerism of Alcohols378Choose the best answerWhich pair has the same molecular formula but belongs to different classes of alcohols?AEthanol and MethanolBPropan-1-ol and Propan-2-olCMethanol and Propan-2-olDButan-1-ol and Ethanol Like 1 Discuss 0Share
SolidsIsomorphism379Choose the best answerNaCl and MgO can be described as isomorphous because they:AHave identical chemical propertiesBHave a 1:1 ionic ratio and similar cubic crystal arrangementCHave exactly the same melting pointDHave a hexagonal structure Like 0 Discuss 0Share
Chemical EquilibriumEffect of Pressure on Equilibrium380Choose the best answerWhich equilibrium is unaffected by pressure change because the total number of gaseous moles is equal on both sides?AN₂(g) + O₂(g) ⇌ 2NO(g)BPCl₅(g) ⇌ PCl₃(g) + Cl₂(g)CN₂(g) + 3H₂(g) ⇌ 2NH₃(g)DSO₂Cl₂(g) ⇌ SO₂(g) + Cl₂(g) Like 0 Discuss 0Share