Stoichiometry Stoichiometry MCQS#Avogadro's Number2051Choose the best answerIf Avogadro’s number changed from 6.022 × 10²³ mol⁻¹ to 6.022 × 10²⁰ mol⁻¹, which quantity would change?AThe definition of mass in units of grams.BThe mass of one mole of carbon.CThe ratio of chemical species in a balanced equation.DThe ratio of elements in a compound. Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Mass Unit2052Choose the best answerOne atomic mass unit (1 u) is defined as:A1/16 of the mass of one oxygen-16 atomB1/12 of the mass of one carbon-12 atomC1/14 of the mass of one nitrogen-14 atomD1/10 of the mass of one neon-20 atom Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Electromagnetic Spectrum2053Choose the best answerWhat is the approximate wavelength of violet light?A7000 ÅB5000 ÅC4000 ÅD6000 Å Like 0 Discuss 0Share
ElectrochemistryRules and Exceptions of Oxidation Number2054Choose the best answerThe oxidation state of oxygen in KO₂ is:A−1/2B−2C−1D−3 Like 1 Discuss 0Share
BUMHS MDCAT 2025 Chemistry#Gases#Intermolecular Forces in Gases2055Choose the best answerIf intermolecular forces between gas molecules disappear suddenly, which of the following would happen? (BUMHS MDCAT 2025)Apressure decreasesBpressure increasesCgas collapsesDpressure remain unchanged Like 1 Discuss 0Share