UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Alkynes#Chemistry of Hydrocarbons916Choose the best answerWhich method is used to prepare alkynes? (UHS MDCAT 2023)ADehalogenation of vicinal dihalides in methanolBDehydration of alcohols over Al₂O₃CDouble dehydrohalogenation of vicinal dihalides using a strong baseDHydrolysis of dicarboxylic acid salts Like 0 Discuss 0Share
SolidsCleavage of Crystals917Choose the best answerThe tendency of a crystal to split along definite planes and produce smooth surfaces is called:AAnisotropyBCleavageCIsomorphismDPolymorphism Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Model918Choose the best answerWhich expression gives the radius of the nth orbit in a hydrogen-like species?Ar = ε₀n²h²/Zπme²Br = nh/2πCr = mv²/rDr = Ze²/4πε₀r² Like 0 Discuss 0Share
BUMHS MDCAT 2025 Chemistry#Liquids#Vapour Pressure919Choose the best answerWhich is the most volatile liquid? (BUMHS MDCAT 2025)AWaterBMethanolCBenzeneDDiethyl ether Like 0 Discuss 0Share
StoichiometryPercentage Yield920Choose the best answerIf actual yield is 15 g and theoretical yield is 20 g, the percentage yield is:A50%B75%C80%D90% Like 0 Discuss 0Share