Sorting materials into Groups

Which of the following materials is hard, opaque and shines?

• Rubber

• Plastic

• Wood

• Tin

Which property of clay is useful for making pots and bricks?

• Opacity

• Non-magnetic nature

• A good conductor of heat

• malleability

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

A mirror is

• opaque.

• transparent

• translucent.

• flexible

Tags

NGSS.MS-PS4-2

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)

Why are paper bags preferred over plastic bags?

• Paper bags are lighter.

• Paper bags are stronger.

• Paper bags are cheap

• Paper bags are biodegradable.

Tags

NGSS.MS-ETS1-2

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

Tags

NGSS.MS-PS1-2

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

Kerosene does not dissolve in water. What are they called?

• Immiscible liquids

• Solute and solvent

• Solvent and solution

• Miscible liquids

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

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4