Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE MainChemistryHaloalkanes and Haloarenes

Consider the following statements regarding the preparation and reactions of haloalkanes and haloarenes: Statement I: Alkyl iodides are often prepared by the reaction of alkyl chlorides with NaI in dry acetone. Statement II: Replacement of the diazonium group by -Cl or -Br using Cu powder and HCl / HBr is called the Sandmeyer reaction. Statement III: A mixture of an alkyl halide and aryl halide gives an alkylarene wh

Options

  1. AI, II, III and IV
  2. BI and III only
  3. CI and IV only
  4. DII and III only

Correct answer

B. I and III only

Step-by-step solution

Statement I describes the Finkelstein reaction, which is a correct method for preparing alkyl iodides. Statement II describes the Gattermann reaction. The Sandmeyer reaction uses cuprous halides ( Cu ₂ Cl ₂ or Cu ₂ Br ₂ ), not copper powder. Thus, Statement II is incorrect. Statement III correctly describes the Wurtz-Fittig reaction, which couples an alkyl halide with an aryl halide. Statement IV describes the Fittig reaction, not the Wurtz-Fittig reaction. The Fittig reaction involves the coupling of two aryl hali

Practice Haloalkanes and Haloarenes on Quantrex Academy →

More from Haloalkanes and Haloarenes

n-Butane on monochlorination under photochemical condition gives an optically active compound "P". "P" on further chlorination gives dichloro compounds. The number of dichloro comp 2026Given below are two statements: Statement I: Due to increase in van der Waals forces, the order of boiling points is CH₃ CH₂ CH₂ I > CH₃ CH₂ I > CH₃ I. Statement II: As para-dichlo 2026RMgI when treated with ice cold water liberated a gas which occupied 1.4 dm ^3/ g at STP. The gas produced is further reacted with iodine in presence of HIO₃ to give compound (X). 2026Benzyl isocyanide can be obtained from Choose the correct answer from the options given below: 2026Match the List-I with List-II List-I (Reaction) List-II (Mechanism) A. Williamson Synthesis I. Electrophilic addition B. Friedel Craft Reaction II. Free radical substitution C. Bro 2026Match the List-I with List-II List-I Name of reaction List-II Reagent or catalyst used A. Finkelstein reaction I. SbF₃ B. Swarts reaction II. Na , dry ether C. Sandmeyer's reaction 2026Correct statements regarding alkyl halides (R - X) among the following are: A. Alcohol being less polar solvent as compared to water, alcoholic KOH favours elimination reaction wit 2026Given below are two statements : Statement (I) : Benzyl chloride reacts faster in S_N1 mechanism than ethyl chloride. Statement (II) : Ethyl carbocation intermediate is less stabil 2026 Full Haloalkanes and Haloarenes list All JEE Main PYQs