Class 6 Chapter 4 Sorting Materials into groups

Short answer type question

Question 1.  Why do we need to group materials? Give one reason.

Question 2.  Name different types of objects that are made from

1. Wood
2. Paper
3. Leather
4. Plastics
5. Cotton

Question 3.  Write any four properties of materials.

Question 4.  How iron, copper and aluminium are similar to each other?

Question 5.  Why do some metal articles lose their shine and become dull?

Question 6.  Name some substances that is insoluble in water.

Question 7. Why water is known as the universal solvent.

Question 8. Name some objects that float in water.

Question 9. What is transparency? Give two examples of transparent material.

Question 10. Give four examples of translucent materials.

Long answer type question

Question 1. How some materials are different from each other in terms of appearance and hardness. Explain.

Question 2. What are soluble and insoluble substances? Give two examples of each.

Question 3.  What are soft and hard materials?

Question 4.  Explain how water plants and animals breathe in water.

Question 5. Write the difference between transparent and translucent materials.

Question 6. Name some materials that sink in water.

Question 7. The palm is translucent. How would you verify it?