NEET ChemistryNCERT Class 12Organic Compounds Containing Halogens
Haloalkanes and Haloarenes: NEET questions with solutions
NEET questions here turn on mechanism: SN1 versus SN2 rates, inversion versus racemisation, Saytzeff elimination, why haloarenes resist substitution, and named reactions such as Finkelstein, Swarts, Wurtz-Fittig and Sandmeyer. Marks are lost on ranking reactivity with the wrong mechanism in mind and on forgetting resonance in the aryl C–X bond.
Revise first: NCERT notes for Haloalkanes and HaloarenesQuestions
10 questions · answers after you pick
1Which bromide reacts fastest with NaI in acetone by the SN2 mechanism?SN2 mechanismEasySingle correct2Heating CH₃Br with AgF gives CH₃F. What is this reaction called?Preparation of haloalkanesEasySingle correct3Why does chlorobenzene undergo nucleophilic substitution far less readily than chloroethane?Reactions of haloarenesEasySingle correct4Arrange these chlorides in order of DECREASING reactivity by the SN1 mechanism: (I) C₆H₅CH₂Cl, (II) CH₃CH₂CH₂Cl, (III) (CH₃)₂CHCl, (IV)…SN1 mechanismMediumSingle correct52-Bromopentane is heated with alcoholic KOH. What is the major product?Elimination reactionsMediumSingle correct6Ethylmagnesium bromide is prepared from bromoethane and magnesium in dry ether. If a little water is added to it, what forms?Reactions with metalsMediumSingle correct7Optically active (R)-2-bromobutane is treated with hydroxide ion under conditions that favour the SN2 mechanism. Judge the Assertion (A) and…Stereochemistry of substitutionMediumAssertion–Reason8Several polyhalogen compounds were once widely used but are now restricted. Which of the statements below about them are correct?Polyhalogen compoundsMediumStatement based9Four named reactions start from a halogen compound or a diazonium salt. Match each reagent set in List I with the organic product it gives…Named reactionsHardMatch the following10Which compound undergoes substitution of chlorine by OH⁻ most easily?Reactions of haloarenesHardSingle correct
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