Separation of Substances PDF

**Section 1: Multiple Choice Questions (MCQs)** **(5 Questions, 2 marks each)** 1. **What method would you use to separate a mixture of sand and water?** - A. Winnowing - B. Filtration - C. Hand-picking - D. Decantation 2. **Which technique is best suited to sepa...

**Section 1: Multiple Choice Questions (MCQs)** **(5 Questions, 2 marks each)** 1. **What method would you use to separate a mixture of sand and water?** - A. Winnowing - B. Filtration - C. Hand-picking - D. Decantation 2. **Which technique is best suited to separate a mixture of flour and small pebbles?** - A. Sieving - B. Winnowing - C. Filtration - D. Decantation 3. **What is the principle behind the method of winnowing?** - A. Difference in particle size - B. Difference in weight - C. Difference in magnetic attraction. - D. Difference in solubility 4. **Which method is used to separate cream from milk?** - A. Sieving - B. Filtration - C. Churning - D. Winnowing 5. **Which method is used to separate tea leaves and tea?** - A. Sieving - B. Filtration - C. Churning - D. Winnowing **Section 2: Fill in the Blanks** **(5 Questions, 1 mark each)** 1. **The method of \_\_\_\_\_\_\_\_\_\_ is used to separate heavier and lighter components of a mixture using wind or blowing air.** 2. **\_\_\_\_\_\_\_\_\_\_ is a technique where a mixture is passed through a filter to separate solid particles from liquids.** 3. **To separate pebbles from sand, we use the method of \_\_\_\_\_\_\_\_\_\_.** 4. **Separating funnel is used to separate two \_\_\_\_\_\_\_\_\_\_ liquids.** 5. **The process of \_\_\_\_\_\_\_\_\_\_ is used to remove small stones from grains by hand.** **Section 3: True or False** **(5 Questions, 1 mark each)** 1. **Magnetic separation is used to separate substances based on their solubility in water.** 2. **Filtration can be used to separate a mixture of water and oil.** 3. **Sieving is an effective method to separate a mixture of wheat and husk.** 4. **Decantation is the process of pouring out the liquid to separate it from the solid settled at the bottom.** 5. **Hand-picking is a method used to separate larger impurities from grains.** **Section 4: Short Answer Questions** **(5 Questions, 2 marks each)** 1. **Explain how you would use a magnet to separate a mixture of iron nails and sand.** 2. **Describe the process of winnowing and give an example of where it might be used.** 3. **How does sieving work, and what is an example of its use?** 4. **What is decantation, and when is it used?** 5. **Why is handpicking not suitable for separating very fine particles from a mixture?**