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JEE CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS
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Replacement of of chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-dinitrochlorobenzene is readily replaced because:
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Correct option: D
withdraws electrons at and positions
Option D is correct because the nitro groups (-NO2) are electron-withdrawing groups that stabilize the negative charge formed during the nucleophilic aromatic substitution at the ortho and para positions, making the chlorine more easily replaced.
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Assertion (A): Isopropyl alcohol is preferred over ethanol.
Reason (R): Isopropyl alcohol is used as an antiseptic for skin before giving injections. Germinated Barley (an enzyme) is a source of enzyme: The process of converting alkyl halides into alcohols involves The b.p. of alcohols areβ¦.than corresponding thiols. Which of the following can not be used to oxidise primary alcohols to aldehydes Conc. heated with excess of at to form
Reason (R): Isopropyl alcohol is used as an antiseptic for skin before giving injections. Germinated Barley (an enzyme) is a source of enzyme: The process of converting alkyl halides into alcohols involves The b.p. of alcohols areβ¦.than corresponding thiols. Which of the following can not be used to oxidise primary alcohols to aldehydes Conc. heated with excess of at to form
