Alcohols, Phenols and Ethers: Class 12 Chemistry Q&A
5 free answers on Alcohols, Phenols and Ethers (Chemistry) for Class 12 students, across CBSE, ICSE and State boards. Includes questions such as “What is ethyl glycol?”, “What is ethyl OH?”, “Is there any alcohol without ethanol?”
Question & Answer
Questions
- ChemistryClass 12All
What is ethyl glycol?
You likely mean ethylene glycol (C2H6O2), commonly used in antifreeze. It's a toxic diol (two -OH groups) that should never be consumed. Confusingly similar in name to ethanol, ethylene glycol poisoning is treated with ethanol because they compete for the same metabolizing enzyme. Always store antifreeze safely away from children and pets.
- ChemistryClass 12All
What is ethyl OH?
Ethyl-OH is another way of writing ethanol (C2H5OH or CH3CH2OH), where "ethyl" represents the C2H5 group and "OH" is the hydroxyl group. This notation emphasizes the alcohol functional group (-OH) attached to the ethyl chain.
- ChemistryClass 12All
Is there any alcohol without ethanol?
No drinkable "alcohol" beverage exists without ethanol ethanol is what makes it alcoholic. "Non-alcoholic" beers and wines contain trace amounts (usually <0.5% ethanol). If you mean other types of chemical alcohols, yes but methanol, isopropanol, and others are toxic and not for consumption.
- ChemistryClass 12All
How much methanol can a human drink?
No amount of methanol is safe to drink intentionally. As little as 10 mL (2 teaspoons) can cause blindness, and 30-100 mL can be fatal. Methanol is extremely toxic and should never be consumed. If methanol ingestion is suspected, seek emergency medical care immediately.
- ChemistryClass 12All
Is ethanol toxic to humans?
Yes, ethanol is toxic but in a dose-dependent manner. Small amounts are processed relatively safely by the body, but larger quantities overwhelm metabolic systems. Acute toxicity causes intoxication and potentially fatal poisoning, while chronic exposure damages liver, brain, heart, and other organs.