class 6..Sorting materials into groups

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

• Rubber

• Plastic

• Wood

• Tin

Tags

NGSS.5-PS1-3

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.

Tags

NGSS.MS-PS1-3

A mirror is

• opaque.

• transparent

• translucent.

• flexible

Tags

NGSS.MS-PS4-2

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 of the combinations is the odd one out?

• Ink and water

• Milk and water

• Oil and water

• Lime juice and water

Tags

NGSS.MS-PS1-2

Which of the following type of bodies form sharp shadows when placed in the path of light?

• Transparent

• Translucent

• Transparent and translucent

• Opaque

Tags

NGSS.4-PS4-2

student added blue ink to a beaker containing water. After a few minutes the colour of water changed to blue.

Which of these properties led to this colour change?

• Miscibility

• Malleability

• Ductility

• Compressibility

Abhi bought an object. It is made of a hard material. It is fragile (easy to break) and allows light to pass through it.What can the object be?

• Shoes

• Mirror

• Cricket bat

• Fish tank

Hussain was applying paint on the wall during which some of the paint fell on his hands. Instead of using water, Hussain used kerosene oil to wash his hands.

Which of the following options explains Hussain's decision?

• Kerosene is softer than water.

• Kerosene smells better than water.

• Paints dissolve in kerosene and not in water.

• Kerosene is more easily available than water.