Sorting materials into group

Objects that are less dense than the water

• float

• sink

Which of the following substance is opaque?

• Wood

• Glass container

• Oily paper

• Water

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

• Rubber

• Plastic

• Wood

• Tin

A mirror is

• opaque.

• transparent

• translucent.

• flexible

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

Mohan is able to bend the rod because it is

• light.

• hard

• water proof.

• flexible

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

Which of these properties of water helps in the washing of clothes?

• Transparency

  
  

• Solubility

• Conductivity

• Compressibility

The glass fitted in the front windshield of car is

• Translucent

• Opaque

• Transparent

• Confused

Which of the following substance is translucent

• Oily paper

• Plain paper

• White paper

• Coloured paper