Chemistry of HydrocarbonsFree-Radical Halogenation of Alkanes26Choose the best answerFree-radical substitution of an alkane with chlorine is initiated by:AHeat or UV lightBDilute HClCConcentrated H₂SO₄DKMnO₄ Like 0 Discuss 0Share
Chemistry of HydrocarbonsActivating and Deactivating Groups27Choose the best answerThe correct order of ring activation toward electrophilic substitution is:AAniline > Phenol > BenzeneBBenzene > Phenol > AnilineCPhenol > Benzene > AnilineDBenzene > Aniline > Phenol Like 0 Discuss 0Share
MDCAT Chemistry Past Papers Reconduct 2023#Chemistry of Hydrocarbons#Cracking28Choose the best answerCracking is a process used to increase the quantity of petrol (gasoline) from which source? (MDCAT Reconduct 2023)ACrude oilBCoalCBiomassDNatural gas Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Chemistry of Hydrocarbons#Reforming29Choose the best answerQ.115 Reforming:AIncreases knocking of internal combustion engineBIncreases octane numberCMore is the knocking, better is the fuelDTo produce a fuel of less octane number Like 0 Discuss 0Share
Chemistry of HydrocarbonsReactivity in Electrophilic Aromatic Substitution30Choose the best answerWhich compound is least reactive toward electrophilic bromination of the aromatic ring?ANitrobenzeneBPhenolCAnisoleDChlorobenzene Like 0 Discuss 0Share