Here are 10 one-word answer type questions based on the subtopic “Hardness” from the chapter Sorting Materials into Groups in Class 6 NCERT Science, with answers and explanations included:
1. Question: Which property of materials tells us how easily they can be scratched?
Answer: Hardness
Explanation: Hardness is the ability of a material to resist scratching or being compressed.
2. Question: What kind of materials can be easily compressed or scratched?
Answer: Soft
Explanation: Soft materials like sponge or cotton are easy to compress or scratch.
3. Question: What kind of materials are difficult to compress or scratch?
Answer: Hard
Explanation: Hard materials like iron or stone resist compression and scratching.
4. Question: What tool is suggested in the textbook to test the hardness of materials?
Answer: Key
Explanation: A metal key can be used to scratch materials and check if they are hard or soft.
5. Question: What should be used to rub materials if cutting is not possible?
Answer: Sandpaper
Explanation: Sandpaper can be used to rub and observe the hardness or lustre of materials.
6. Question: What type of appearance do most hard materials like iron or copper have?
Answer: Lustrous
Explanation: Hard materials like metals often have a shiny appearance, called lustre.
7. Question: Which property helps in making tools from materials like iron and steel?
Answer: Hardness
Explanation: Tools must be made of hard materials so they do not break or wear easily.
8. Question: What do we call the resistance of a material to being deformed?
Answer: Hardness
Explanation: Hardness measures how well a material resists shape change under force.
9. Question: Is chalk a hard or soft material?
Answer: Soft
Explanation: Chalk can be easily scratched or broken, so it is a soft material.
10. Question: Is stone a soft or hard material?
Answer: Hard
Explanation: Stone is difficult to scratch or compress, making it a hard material.
Let me know if you’d like to move to another property like solubility or transparency next!
