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- 1. Multiple Choice
Which of the following will dissolve in water
Metal
Chalk
paper
oxygen
- 2. Multiple Choice
The property of a substance bu which it dissolves in water is
Transparency
Hardness
flotation
solubility
- 3. Multiple Choice
Which of the following materials is hard, opaque and shines?
Rubber
Plastic
Wood
Tin
- 4. Multiple Choice
Which of the following materials is suitable to make raincoats?
Cotton
Plastic
Silk
Paper
- 5. Multiple Choice
Why are most of the balloons, tyres and footballs made of rubber?
It is naturally available.
It is cheap.
It is an electrical insulator.
It is soft and flexible.
- 6. Multiple Choice
If opacity is the distinct feature of wood, then what is glass known for in the same way?
Its transparency
Its magnetic nature
Its conductivity to heat
Its lustrous nature
- 7. Multiple Choice
A mirror is
opaque.
transparent
translucent.
flexible
- 8. Multiple Choice
When Amrita was asked to pick up a few articles from a collection, she picked up the following:
Wooden scale
Glass test tube
Paper basket
Which of the following articles is she most likely to pick up the next
Steel cup
Iron chain
Rubber gloves
Copper wire
- 9. Multiple Choice
Which characteristics given below are of metals?
(i) They are hard.
(ii) They have lustre.
(iii) They are good conductors of electricity
Only (i) and (ii
Only (ii) and (iii)
Only (i) and (iii)
i), (ii) and (iii)
- 10. Multiple Choice
Why are paper bags preferred over plastic bags?
Paper bags are lighter.
Paper bags are stronger.
Paper bags are cheap
Paper bags are biodegradable.
- 11. Multiple Choice
A vendor sells white powdered salt mixed with white powdered stone. Which of these properties will help you detect his malpractice?
Ductility
Opacity
Density
Solubility
- 12. Multiple Choice
Door locks are made of metals. Which property of metals is made use of?
They have lustre
They are opaque
They are good conductors of heat.
They are hard and strong
- 13. Multiple Choice
Kerosene does not dissolve in water. What are they called?
Immiscible liquids
Solute and solvent
Solvent and solution
Miscible liquids
- 14. Multiple Choice
Which is the most essential property of a substance to be used as a cooking vessel?
Good conductor of heat
Ductility
Malleability
All of the above
- 15. Multiple Choice
Which type of the following materials is used for making the front glass (wind screen) of a car?
Transparent
Translucent
Opaque
None of the above
- 16. Multiple Choice
Which one of the following dissolve in water
Wood
Rock
Sugar
Plastic
- 17. Multiple Choice
Take two samples, one is oil and other is water. Mix the two. You observe that
They are soluble.
Oil floats on water
Water floats on oil
None of the above
- 18. Multiple Choice
An oiled paper act as a _______ material.
Transparent
Translucent
Hard
Opaque
- 19. Multiple Choice
Which of the following statements is not true?
Materials are grouped for convenience.
Materials are grouped to study their properties.
Materials are grouped for fun.
Materials are grouped according to their uses
- 20. Multiple Choice
Raghav and his friends have been given 3 substances and asked to find out which of them is the hardest. Which of these is the most scientific way to start?
Raghav: "Let us understand what the meaning of hard is and a way to measure it."
Ramesh: "This piece of glass is the hardest - I have read that glass is very hard."
Sajida: "Let us ask our seniors the answer - they must have done this last year."
Sanjana: "This is not in our syllabus - how can we do it?"
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