Sorting of Materials into Groups

A good example of grouping can be seen in a -

• Playground

• Supermarket

• Store Room

• Hospital

The amount of substance that will dissolve in a given amount of another substance is called _____________.

• Density

• Transparency

• Miscibility

• Solubility

Anything that has a mass and occupies space is called -

• Classification

• Volume

• Matter

• Air

Riya and her friends were playing hide and seek. Riya hid behind a glass window. The referee found her very easily. Riya couldn't understand why. Can you explain to her?

• The referee was cheating

• The glass window is transparent

• The glass window is opaque

• Not so sure

Select those objects from the following which shine:

Glass bowl, plastic toy, steel spoon, cotton shirt

• Plastic toy and spoon

• Cotton shirt and plastic toy

• Plastic toy and glass bow

• Glass bowl and steel spoon

Read the following statements and choose the INCORRECT statement –

• Butter paper is transparent. Things can be clearly seen through it.

• Cotton is soft. It can be compressed easily.

• An iron nail is hard and it sinks in water.

• All are correct

Find the odd one out:

Sugar, Salt, Sand, Copper sulphate

• Sugar

• Salt

• Sand

• Copper sulphate

Find the odd one out:

Wood, Stone, Iron, Cotton, Diamond

• Wood

• Stone

• Iron

• Cotton

• Diamond

Assertion- Copper metal have lower density than water.

Reason- The materials which sink in the water have higher density than water

• Both A and R are true and R is the correct explanation of Assertion

• Both A and R are true but R is not the correct explanation of Assertion

• A is true and R is false

• A is false and R is true

Assertion- Shopkeepers usually keep biscuits, sweets, etc., in transparent containers of glass or plastic.

Reason- Buyers could see through the transparent containers.

• Both A and R are true and R is the correct explanation of A

• Both A and R are true but R is not the correct explanation of A

• A is true but R is false

• A is false but R is true