Sindh MDCAT 2021 Chemistry#Periodic Table#Periodic Trends1721Choose the best answer'A' is the element of IIA group while 'B' belongs to VA group:AABBAB₃CA3B₂DA2B₃ Like 0 Discuss 0Share
GasesLiquefaction of Gases and Critical Temperature1722Choose the best answerA gas can be liquefied most effectively by:AIncreasing temperature onlyBDecreasing pressure onlyCCooling it below its critical temperature and applying pressureDHeating it above its critical temperature Like 0 Discuss 0Share
GasesCharles's Law1723Choose the best answerAccording to Charles's law, at constant pressure the volume of a fixed amount of gas is directly proportional to:ACelsius temperatureBAbsolute temperatureCPressureDDensity Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Frequency1724Choose the best answerWhat is the SI unit of frequency?AJouleBHertzCMetreDSecond Like 0 Discuss 0Share
StoichiometryGas Volume Stoichiometry1725Choose the best answerIn the reaction: N₂ + 3H₂ → 2NH₃ 6 L NH₃ is produced with no reactant left unused. What initial volumes of N₂ and H₂ were used at the same temperature and pressure?A3 L N₂ and 3 L H₂B1 L N₂ and 3 L H₂C2 L N₂ and 3 L H₂D3 L N₂ and 9 L H₂ Like 0 Discuss 0Share