Last updated on September 2nd, 2024 at 10:54 pm
Answer: b) Mass
Materials that do not have a shiny surface are called:
- a) Lustrous
- b) Non-lustrous
- c) Transparent
- d) Opaque
Answer: b) Non-lustrous
The SI unit for volume is:
- a) Litre
- b) Millilitre
- c) Cubic metre
- d) Cubic centimetre
Answer: c) Cubic metre
The ability of a material to dissolve in water is called:
- a) Solubility
- b) Transparency
- c) Hardness
- d) Lustre
Answer: a) Solubility
Which of these gases is soluble in water?
- a) Oxygen
- b) Nitrogen
- c) Helium
- d) Neon
Answer: a) Oxygen
What is the relationship between 1 cubic metre and litre?
- a) 1 m³ = 100 L
- b) 1 m³ = 500 L
- c) 1 m³ = 1000 L
- d) 1 m³ = 10000 L
Answer: c) 1 m³ = 1000 L
What property of materials allows us to see through them?
- a) Opacity
- b) Transparency
- c) Solubility
- d) Hardness
Answer: b) Transparency
Which of these materials is likely to have the most lustre?
- a) Paper
- b) Wood
- c) Copper
- d) Cloth
Answer: c) Copper
What happens to metals when exposed to air and moisture for a long time?
- a) They become more lustrous
- b) They become transparent
- c) They lose their lustre
- d) They dissolve
Answer: c) They lose their lustre
What type of material would be best for making a window?
- a) Opaque
- b) Translucent
- c) Transparent
- d) Lustrous
Answer: c) Transparent
What type of material would be best for making a mirror?
- a) Transparent
- b) Translucent
- c) Opaque and lustrous
- d) Opaque and non-lustrous
Answer: c) Opaque and lustrous
