Sorting materials into groups

The process of grouping the things on the basis of similar properties is called

• matter

• classification

• roughness

• arrangement

Transparent materials allow the light to pass through them

• sometimes only

• partially

• completely

• not at all

Which of the following floats on water?

• Marble

• Wax

• Coin

• Stone

News paper, books, diaries etc are made of

• Wood

• Plastic

• Leather

• Paper

Which of the given is a compound

• Silver

• Iron

• Common salt

• Gold

A substance through which do not pass light is called

• Translucent

• Opaque

• Semi-conductor

• Transparent

Which of the following is soluble in water

• Sand

• Sugar

• Mustard oil

• Plastic

Which of the following materials is not lustrous

• Diamond

• Wood

• Gold

• Silver

Take two samples one of oil and other of water. Mix the two..what do you observe?

• Water floats on oil

• Oil floats on water

• They are miscible

• None of these

An oiled paper acts as a........... material

• Lustrous

• Translucent

• Transparent

• Opaque