LiquidsCondensation76Choose the best answerCondensation of a vapour into a liquid is accompanied by:AIncrease in molecular energyBIncrease in molecular separationCNo energy changeDDecrease in energy Like 0 Discuss 0Share
Chemical EquilibriumCommon-Ion Effect and H₂S Equilibrium77Choose the best answerFor H₂S ⇌ 2H⁺ + S²⁻, addition of NH₄OH causes the concentration of S²⁻ to:ADecreaseBRemain unchangedCIncreaseDBecome zero Like 0 Discuss 0Share
MDCAT Chemistry Paper 2025#Percentage Yield#Stoichiometry78Choose the best answerWhat is the percentage yield when actual yield is 2 g and theoretical yield is 4 g? (IBA MDCAT 2025)A25%B50%C75%D85% Like 1 Discuss 0Share
StoichiometryPrinciples of Stoichiometry79Choose the best answerWhich statement is NOT consistent with ideal stoichiometric calculations?AThe intended reaction proceeds according to the stated equationBThe chemical equation must be balancedCSide-product formation is neglected unless specifiedDProducts should not follow stoichiometric relationships Like 0 Discuss 0Share
SZABMU MDCAT 2025 Chemistry#Alkynes#Chemistry of Hydrocarbons80Choose the best answerWhich of the following reagent is commonly used to prepare alkyne form vicinal dihalide? (SZABMU MDCAT 2025)AH₂ and catalystBKOH/NaNH₂CKMnO₄DLiAlH₄ Like 0 Discuss 0Share