Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#X-Rays961Choose the best answerWho systematically studied the characteristic X-ray spectra of elements?AWilhelm RoentgenBHenry MoseleyCJ.J. ThomsonDMax Planck Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#X-Rays962Choose the best answerK-series X-rays are mainly produced by elements with:ASmall atomic numbersBLarge atomic numbersCNo neutronsDIdentical atomic masses Like 1 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Mole Concept963Choose the best answerHow many moles of atoms are present in 0.1 mol of a triatomic molecule?A0.1 mol atomsB0.3 mol atomsC3 mol atomsD1 mol atoms Like 0 Discuss 0Share1
Aldehydes and KetonesDehydrogenation of Alcohols964Choose the best answerTertiary alcohols do not undergo normal dehydrogenation to carbonyl compounds over heated copper because:AThey are readily oxidized.BThey lack an α-hydrogen on the carbon bearing –OH.CThey lack every β-hydrogen.DThey do not contain an –OH group. Like 0 Discuss 0Share
SZABMU MDCAT 2025 Chemistry#Bond Angle#Chemical Bonding965Choose the best answerWhich of the following has smallest bond angle? (SZABMU MDCAT 2025)AC₂H₂BNH₃CH₂SDBeCl₂ Like 0 Discuss 0Share