- This question requires matching separation processes with appropriate methods based on the properties of the mixtures and their components. - A. Separation of acetone and water from their mixture: Acetone and water are miscible liquids with different boiling points. Distillation is used to separate miscible liquids based on differences in volatility. Acetone boils at a lower temperature (around 56°C) than water (100°C), allowing it to be vaporized and condensed separately. This matches with 3. Distillation. - B. Separation of water and kerosene oil from their mixture: Water and kerosene oil are immiscible liquids with different densities. They form two distinct layers when left undisturbed. A separating funnel is used to separate immiscible liquids, allowing the denser liquid (water) to be drained out from the bottom. This matches with 4. Separating Funnel. - C. Separation of cream from milk: Milk is a suspension or emulsion of fat globules (cream) in a watery phase. Centrifugation is used to separate components of a mixture based on density differences using centrifugal force. Spinning milk rapidly forces the denser skim milk to the periphery while the lighter cream concentrates towards the center. This matches with 2. Centrifugation. - D. Separation of pigments from plant extract: Plant extracts contain a mixture of different colored pigments. Chromatography is a technique used to separate components of a mixture based on their differential partitioning between a stationary phase and a mobile phase. Different pigments travel at different rates, allowing them to be separated. This matches with 1. Chromatography.
Match List I with List II and select the correct answer using the code given below the Lists : List II List I (Separation (Process) method)
Asked in UPSC NDA 2 2023 · Topic: Physical and Chemical Changes, Solution (Distinguishing Solutions, Colloids, and Suspensions)
Show answer
Answer: C. Separation of cream from 3. Distillation milk
More Chemistry questions
- Kerosene and petrol mixture can be best separated by
- Milk is an example of:
- Match List-I with List-II and select the correct answer using the code given below : List-II (Contamin‐ List-I (Process) ant)
- Which one of the following statements regarding matter is *not* correct ?
- Which one of the following is not a colloid ?
- By which process Alum cleans the muddy water:
- By which process the sea water can be converted into pure water:
- The size of the nanoparticles between____nm.