Chemical KineticsEffect of Concentration on Reaction Rate761Choose the best answerThe _____ the concentration of reactants, the _____ the probability of collisions and hence the _____ the reaction rate.ALower, greater, greaterBHigher, greater, higherCHigher, lower, higherDLower, lower, higher Like 0 Discuss 0Share
MDCAT Chemistry Past Paper 2023#Alcohols#Alcohols and Phenols762Choose the best answerWhich of the following is formed when excess ethyl alcohol is treated with concentrated H₂SO₄ at a low temperature? (MDCAT 2023)ADiethyl etherBDimethyl etherCEtheneDAcetylene Like 0 Discuss 0Share
Nomenclature of Organic CompoundsNomenclature of Organic Compounds MCQs#Chemical Bonding#Sigma and Pi Bonds763Choose the best answerHow many σ and π bonds are present in CH₂=CH–C≡CH, respectively?A7σ, 3πB5σ, 2πC8σ, 3πD6σ, 2π Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#Isotopes764Choose the best answerWhich technique is used to determine relative isotopic abundance?AX-ray diffractionBMass spectrometryCFlame testDChromatography Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Quantum Numbers765Choose the best answerHow many quantum numbers are needed to completely describe an electron in an atom?ATwo quantum numbersBThree quantum numbersCFour quantum numbersDFive quantum numbers Like 1 Discuss 0Share