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UNSTOPPABLE ACADEMIC CLASSES CLASS XII CHEMISTRY D.P.P. HALOARENES 1. Chlorobenzene reacts with NaOH at 623 K and 300 atm pressure to give: (a) Phenol (b) Benzyl alcohol. (c) Benzoic acid. (d) Benzene 2. When chlorobenzene reacts with methyl chloride in presence of anhydrous AlCl , the product formed is: (a) Toluene. (b) Chlorotoluene. (c) Benzene. (d) Benzyl chloride 3. Why is chlorobenzene less reactive towards nucleophilic substitution than alkyl halides? (a) Due to resonance and partial double bond character in C Cl bond (b) Due to large size of Cl atom (c) Due to induction only (d) Because Cl is meta directing 4. When chlorobenzene reacts with NaNH in liquid NH , the intermediate formed is: (a) Carbocation (b) Benzyne (c) Arene ion (d) Carbanion only 5.Assertion (A): Chlorobenzene does not undergo SN1 or SN2 reactions easily. Reason (R) : Carbon attached to Cl in chlorobenzene is sp hybridized and resonance-. stabilized. (A) Both A and R are true, and R is the correct explanation. (B) Both A and R are true, but R is not the correct explanation. (C) A is true, R is false (D) A is false, R is true 6. How will you bring about the following conversions(Give Reaction only) (I) Chlorobenzene to Benzene (II) Aniline to Chlorobenzene (III) Chlorobenzene to p-Nitrochlorobenzene 7. C6H5NH2 + NaNO2 + HCl -----> [A] + Cu/HCl ------>[B] + Na + CH3Cl --Dry ether---->[C] Identify [A] [B] [C]

 

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