SORTING MATERIALS INTO GROUPS

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 following dissolves in water

• Wood

• A piece of Rock

• A cube of Sugar

• A piece of plastic

Which of the following substance is translucent?

• Oily paper

• Plain paper

• White paper

• Coloured paper

Tags

NGSS.MS-PS4-2

Which of the following has lustre

• A plastic toy

• A newspaper

• A cotton Shirt

• A stainless Steel Spoon

Take two samples, one is oil and other is water. Mix the two. You observe that -

• They are soluble.

• Oil floats on water

• Water floats on oil

• None of the above

Which of the following has dull appearance ?

• aluminium foil

• steel chair

• steel bucket

• brick

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

Which of the following options explains Siddhesh'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.

The space between particles is maximum in -

• solids

• liquids

• gases

• both solids and liquids

Transparent materials allow the light to pass through them -

• partially

• completely

• sometimes only

• not at all

Tags

NGSS.MS-PS4-2