Atomic StructureIsoelectronic Species476Choose the best answerWhich of the following has the same number of electrons as Ne?ACl⁻BLiCLi⁺DO²⁻ Like 0 Discuss 0Share
BUMHS MDCAT 2025 Chemistry#Percentage Yield#Stoichiometry477Choose 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
Sindh MDCAT 2021 Chemistry#Alkynes#Chemistry of Hydrocarbons478Choose the best answerCalcium Carbide on hydrolysis forms:AmethaneBethaneCbenzeneDacetylene Like 0 Discuss 0Share
Industrial chemistry Industrial chemistry MCQS#Enzymes#Macromolecules479Choose the best answerIn the induced-fit model, an enzyme:AHas a completely rigid active siteBChanges its shape slightly to improve substrate bindingCPermanently changes into the productDBinds only after the reaction is complete Like 0 Discuss 0Share
Stoichiometry 11#Avogadro's Number480Choose the best answerIf one mole were defined as 6.022 × 10²⁰ particles instead of 6.022 × 10²³ particles, which quantity would change?AThe definition of mass in gramsBThe mass of one mole of carbonCThe stoichiometric ratio in a balanced equationDThe ratio of elements in a compound Like 0 Discuss 0Share