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InterviewSolution
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: (Question Nos. 16 to 18 are of long answer typ(Differentiate between methyl alcochol and ethylalcohol)(Why sea divers use helium ?)s each.)3x5-15 |
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Answer» Methyl alcohol or methanol share some similar characteristics with ethyl alcohol or ethanol. They are colorless liquids, with very good solubility in water. The difference is that methanol is highly poisonous. Drinking only small amount of methanol can lead to blindness, or death (10–100 ml). Both methanol and ethanol have a pleasant odor. Ethanol is poisonous also, but only when consumed in large quantities. It is an ingredient of many beverages and it can cause an addiction. Methanol can be used to create a formaldehyde or as a fuel. Ethanol can be easily confused with methanol. You can distinguish those two by using the so calledIodoformtest. In an alkali environment and with iodine the ethanol will change to acetaldehyde. And acetaldehyde with iodine will provide yellow crystalline iodoform. The methanol does not react like this. |
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