Which of the following statements are correct?A. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point.B. Aniline can be purified by steam distillation as aniline is miscible in water.C. Ethanol can be separated from ethanol water mixture by azeotropic distillation because it forms azeotrope.D. An organic compound is pure, if mixed M.P. is remained same.Choose the most appropriate answer from the options given below :JEE Main 2024 (06 Apr Shift 1)AA, B, C onlyBA, C, D onlyCA, B, D onlyDB, C, D only
Question
Which of the following statements are correct?A. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point.B. Aniline can be purified by steam distillation as aniline is miscible in water.C. Ethanol can be separated from ethanol water mixture by azeotropic distillation because it forms azeotrope.D. An organic compound is pure, if mixed M.P. is remained same.Choose the most appropriate answer from the options given below :JEE Main 2024 (06 Apr Shift 1)AA, B, C onlyBA, C, D onlyCA, B, D onlyDB, C, D only
Solution
The correct answer is B. A, C, D only.
Explanation:
A. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point. This statement is correct. Glycerol has a high boiling point, and it tends to decompose at its normal boiling point. Therefore, it is purified by vacuum distillation, which allows it to boil at a lower temperature.
B. Aniline can be purified by steam distillation as aniline is miscible in water. This statement is incorrect. Aniline is not miscible in water, so it cannot be purified by steam distillation.
C. Ethanol can be separated from ethanol water mixture by azeotropic distillation because it forms azeotrope. This statement is correct. Ethanol and water form an azeotrope, a mixture that boils at a constant temperature and cannot be separated by simple distillation. Therefore, azeotropic distillation is used to separate ethanol from water.
D. An organic compound is pure, if mixed M.P. is remained same. This statement is correct. The melting point (M.P.) of a substance is a physical property that can be used to determine its purity. If the melting point of a mixture remains the same, it indicates that the organic compound in the mixture is pure.
Similar Questions
Researchers purify two samples of the same mixture, one by simple distillation and the other by vacuum distillation. Which of the following expressions correctly compares the relationship between the mixture components' boiling points (bp) during each distillation?A.Simple distillation bp = vacuum distillation bpB.Simple distillation bp < vacuum distillation bpC.Simple distillation bp > vacuum distillation bpD.Simple distillation bp = 2(vacuum distillation bp)Submit
A ______ is a substance dissolved in a solvent.Multiple choice question.dissociateprecipitatesolutedecomposer
Given below are two statements:Statement I: Components of azeotropes can be separated by fractional distillation.Statement II: The solution which shows a large positive deviation from Raoult’s law form minimum boiling azeotropes at a specific composition.In the light of above statements, choose the correct answer from the options given below.
Which of the following statements is NOT correct? A) Glycerol is an organic compound containing three hydroxyl groups B) Glycolipids are the main constituents of cell membranes C) Glycogen is a polysaccharide with an energy storage function D) Glyceraldehyde is a three-carbon carbohydrate E) Glyphosate is a herbicidal substance
Nitika is writing some statements but she confused to know whether the statements are correct or not? If you know the answer to this question, then tell her:1 point[A]. A mixture of common salt and water can be separated completely by the process of distillation.[B]. Those liquids which mix together in all proportion and form a single layer are called miscible liquids.[C]. Pure water or distilled water is made from tap water by the process of distillation.[D]. All the above
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.