SINDH MDCAT 2019 CHEMISTRY#Mole Concept#Stoichiometry131Choose the best answerThe volume occupied by 1.4 g N₂ at STP is: (Sindh MDCAT 2019)A22.4 dm³B1.12 dm³C11.2 dm³D1.4 dm³ Like 0 Discuss 0Share
BUMHS MDCAT 2025 Chemistry#Percentage Yield#Stoichiometry132Choose the best answerA student expects a theoretical yield of 28 g. After isolating and drying the sample, its mass is 18 g. Later, 4 g of this mass is found to be impurity. What are the actual yield and percentage yield?A14 g and 50%B18 g and 75%C28 g and 85%D24 g and 90% Like 0 Discuss 0Share
StoichiometryLimiting Reagent133Choose the best answerEach sandwich requires 2 slices of bread and 1 shami. If 20 bread slices and 8 shamies are available, the limiting ingredient is:AShamiesBSandwichesCBread slicesDNone of these Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms134Choose the best answerThe number of carbon atoms in 6 mg graphite is approximately:A3.01 × 10²³B6.02 × 10²³C3.01 × 10²⁰D6.02 × 10²⁴ Like 0 Discuss 0Share
StoichiometryPrinciples of Stoichiometry135Choose the best answerWhich is NOT a valid assumption used in ideal stoichiometric calculations?ANo side reaction occursBReactants are completely converted according to the given reactionCTotal moles of products must equal total moles of reactantsDThe chemical equation is balanced Like 0 Discuss 0Share