Sorting materials into groups

You are provided with the following materials.

(a) magnifying glass (b)mirror (c)stainless steel plate

(d) glass tumbler

Which of the above materials you will identify as transparent?

• option (a) and (b)

• option (a) and (c)

• option (a) and (d)

• option (c) and (d)

Boojai found a bag containing the following materials.Help him finding the material which are opaque.

(1) mirror (2)Paper stained with oil (3)magnet (4) glass spectacles

• only (1)

• only (4)

• (1) and (3)

• (1) and (4)

which of the following material is not lustrous?

• gold

• silver

• diamond

• wood

which of the following statements is not true?

• materials are grouped according to their use

• materials are grouped for fun

• materials are grouped based on property

Find the odd one out of the following.

• Tawa

• Spade

• Eraser

• Pressure cooker

materials that can not be compressed easily are called ____ materials.

• soft

• scaly

• smooth

• hard

Take one glass of oil and one glass of water. Mix the two. You observe that ______

• They are soluble

• Oil floats on water

• Water floats on oil

• none of these

Materials through which objects can be seen partially____

• transparent

• translucent

• opaque

• none of these

Take a cotton ball and place it in water filled with water for 10 minutes. Will the cotton ball float or sink in water?

• float

• sink

Pick the material that is completely soluble in water

• saw dust

• Glucose

• Tea leaves

• stone