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Phenol reacts with Br₂ in water to form 2,4,6-tribromophenol due to the strong activation of the ring by the -OH group, leading to trisubstitution.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Alcohols - Dehydration Oxidation Esterification
Primary halides react slowest with AgNO₃ via SN₁ . CH₃CH₂CH₂Cl is primary and forms AgCl slowest among the options.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Elimination Reactions and Reaction with Metals and Other Reactions
Violet color with sodium nitroprusside indicates sulphur (Na₂S), and white precipitate with AgNO₃ indicates chlorine (AgCl).
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Electronic Effects - Inductive Mesomeric Hyperconjugation and Resonance
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