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JEE CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS
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Purity of ether before using it as anaesthetic agent is tested by:
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Correct option: A
starch
Option A is correct because the presence of peroxides in ether, which can form upon exposure to air, is detected using KI and starch, leading to the formation of iodine and a blue color.
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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 are….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 are….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