TS EAMCET Haloalkanes and Haloarenes — practice questions
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Practice TS EAMCET Haloalkanes and Haloarenes in the app →Hydrocarbons are organic compounds composed exclusively of:In the presence of organic peroxides, addition of HBr to propene gives predominantly:Wurtz reaction is used to prepare:The C–X bond enthalpies follow the order:Among alkyl halides, the order of reactivity towards nucleophilic substitution (for the same R group) is:The order of reactivity of alcohols with a given haloacid (HCl, HBr, HI) is:The reaction of alkyl chloride/bromide with NaI in dry acetone to form alkyl iodide is called:Among methyl chloride, methyl bromide and methyl iodide, the order of boiling points is:Grignard reagent (RMgX) is prepared by:A molecule that is non-superimposable on its mirror image is called:Stereoisomers that are non-superimposable mirror images of each other are called:A racemic mixture is:Haloalkane has general formula:Haloarene example:Classification of haloalkane by C bearing halogen: 1° if X is on:IUPAC name of CH₃CH₂CH₂Cl:Polarity of C-X bond order (most polar first):Reactivity order for SN2 reactions (1°, 2°, 3°):Finkelstein reaction:Grignard reagent: R-X + Mg in dry ether gives:Reaction of Grignard with formaldehyde HCHO gives:Reactivity of haloalkanes in SN2 by leaving group:For SN1 reaction, rate is independent of:Reaction of (CH₃)₃C-Br with H₂O gives:Saytzeff product from 2-bromo-3-methylbutane + base:In haloalkanes, the halogen is bonded to a carbon with which hybridisation?In haloarenes, the halogen is attached to which kind of carbon?Which chlorine-containing antibiotic is very effective against typhoid?Which iodine-containing hormone, when deficient, causes goitre?Which synthetic halogen compound is used to treat malaria?Which halogen compound is used as an anaesthetic during surgery?In a C-X bond of an alkyl halide, the carbon atom carries what?How does carbon-halogen bond length change going from F to I?Why is SOCl2 preferred for making alkyl chlorides from alcohols?Primary alcohols react with HCl to give alkyl chlorides in presence of?What is the reactivity order of alcohols with a given halogen acid?Good yields of alkyl iodides come from heating alcohols with which mixture?Phosphorus tribromide is usually generated in situ from which reactants?Why can phenols not be turned into aryl halides like alcohols can?What is the main drawback of free radical chlorination of alkanes?Propene adds HBr by Markovnikov's rule. What is the major product?Discharge of bromine's reddish brown colour in CCl4 detects what?Alkyl bromide heated with NaI in dry acetone gives alkyl iodide. Name it.What drives the Finkelstein reaction forward?The Swarts reaction makes alkyl fluorides using which reagents?Iodination of benzene needs which added reagent to proceed?A benzene diazonium salt gives chlorobenzene when mixed with what?Iodobenzene is made from a diazonium salt by shaking it with what?For the same alkyl group, what is the boiling point order of halides?Why do alkyl iodides boil higher than alkyl chlorides?Which C4H9Br isomer has the lowest boiling point?Why are haloalkanes only very slightly soluble in water?A haloalkane reacts with KCN. What is the main product?Why does AgCN give mainly isocyanides with haloalkanes?Nitrite ion attacking a haloalkane through nitrogen gives what?What order of kinetics does CH3Cl with hydroxide ion follow?How many steps does an SN2 reaction take?What is the SN2 reactivity order of alkyl halides?What intermediate forms in the slow step of an SN1 reaction?Which bromide reacts fastest by the SN1 mechanism?A dextrorotatory compound rotates plane polarised light in which way?In which year did Van't Hoff and Le Bel propose the tetrahedral carbon?Which of these molecules is achiral?What is the net optical rotation of a racemic mixture?Optically active 2-bromobutane is hydrolysed by SN1. What forms?A haloalkane heated with alcoholic KOH mainly gives what?By Zaitsev's rule, which alkene is the preferred elimination product?2-Bromopentane with alcoholic KOH gives which major product?A bulky base meets an alkyl halide with beta hydrogens. What is favoured?Grignard reagents are made by reacting haloalkanes with what?Why must even traces of moisture be kept away from a Grignard reagent?An alkyl halide and an aryl halide with sodium in dry ether give an alkylarene. Name it.What is the approximate C-Cl bond length in a haloarene?Why is the SN1 mechanism ruled out for haloarenes?Chlorobenzene is turned into phenol with aqueous NaOH under which conditions?In electrophilic substitution, a halogen on benzene behaves as what?In chlorobenzene, which effect controls where a new group enters?Which polyhalogen compound is widely used as a paint remover?Freons are chlorofluorocarbons of which hydrocarbons?Many fluoroalkanes boil lower than their non-fluorinated analogues. Why?The ozone-depleting ability of CFCs arises from what?Geminal dihalides treated with strong bases can give which species?Haloalkanes react with lithium metal to give what?Haloalkanes heated with aqueous hydroxide mainly undergo what?Haloalkanes react with ammonia to give which compounds?Which compound is a popular methylating agent in organic synthesis?DDT builds up in animals mainly in which tissue?Which haloalkane class has largely replaced CFCs as refrigerants?A halogen on an sp3 carbon next to a C=C bond makes which class of halide?In which class of halide is the halogen bonded to an sp2 carbon of a C=C bond?A halogen on an sp3 carbon attached to a benzene ring gives which class?Two halogens on the same carbon atom of a chain make which kind of dihalide?Common names call a vic-dihalide by which term?