States of matter 1

1. The fundamental unit of a compound is

• molecule

• an atom

• a particle

• an element

Which among the following constitutes the fundamental building

block of matter?

• molecule

• an atom

• a particle

• an element

A large amount of pure oxygen gas contains

• molecules of oxygen only

• atoms of oxygen only

• molecules and atoms of oxygen

• molecules of air

Which container will you use to store compressed gas?

• An open jar

• A jar closed with a lid

• A paper bag

• A sealed cylinder

Which of the following states would have highest energy

• Solid

• Gas

• Liquid

• Both liquid and gas

Which of the following statements is false for liquids?

• Liquids have fixed shapes

• . Liquids occupy the shape of their container

• Liquids can flow from one place to another place

• Liquids have fixed volume

The compressibility of solids is

• Less than liquids and gases

• More than liquid

• Equal to liquids and gasses

• More than gases only

All properties are unique to gases, except:

• A. their particles are loosely held by forces of attraction

• B. they occupy less space as compared to solids

• C. they are compressible by nature

• D. they can take up the shape of the container

Helium is used to fill balloons because

• its volume is fixed

• it expands unequally in all directions

• it is less dense than air

• it is heavier than air

When you fill sugar in a jar, it appears to have taken the shape of

the jar. On tilting the jar, sugar flows from the jar to the other

container. Sugar is a

• Liquid

• Solid

• Gas

• Vapour