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Worksheetsclass 9 quiz
Total questions: 20
Worksheet time: 10mins
particles of matter
small in size
are in continuous motion
attract each other
all of the above
only i and ii
size of the particles are in the order of
10-6
10-10
10-20
10-9
A form of matter has no fixed shape but it has a fixed volume. An example of this form of matter is
krypton
kerosene
carbon steel
carbon dioxide
4. Which one of the following statements is not true?
The molecules in a solid vibrate about a fixed position
The molecules in a liquid are arranged in a regular pattern
The molecules in a gas exert negligibly small forces on each other, except during collisions
The molecules of a gas occupy all the space available
On converting 308 K, 329 K and 391 K to Celsius scale, the correct sequence of temperatures will be:
33°C, 56°C and 118°C
35°C, 56°C and 119°C
35°C, 56°C and 118°C
56°, 119°C and 35° C
Which of the following statement is not true regarding the characteristic of matter?
Particles of a matter are randomly moving in all directions.
Kinetic energy of the particles increases with a rise in temperature
Kinetic energy of the particles of all maters remains the same at a particular temperature.
Particles of matter diffuse into each other on their own.
The quantity of matter present in an object is called its:
weight
mass
density
gram
The boiling point of alcohol is 78oC. What is this temperature in Kelvin scale:
395K
273K
373K
351K
The boiling point of water on Celsius and Kelvin scale respectively is:
100,273
0,273
100,373
273,150
When we put some crystals of potassium permanganate in a beaker containing water, we observe that after sometime whole water has turned pink. This is due to:
Boiling
Melting of potassium permanganate crystals
Sublimation of crystals
Diffusion
he state of matter which consists of super energetic particles in the form of ionized gases is called:
Gaseous state
Liquid state
Bose- Einstein condensate
Plasma state
The force that binds the particles of matter together is known as:
Intermolecular space
Bond
Intermolecular force
Nuclear force
The change of a liquid into vapour is called:
Vaporization
Solidification
Sublimation
none of the above
When a teaspoon of solid sugar is dissolved in a glass of liquid water, what phase or phases are present after mixing:
Liquid only
Still solid and liquid
Solid only
None of these
Non- reacting gases have a tendency to mix with each other. This phenomenon is known as:
Chemical reaction
Diffusion
Effusion
Explosion
What is the term used to describe the phase change of a liquid to a gas?
Boiling
Condensation
Melting
Sublimation
Which has the least energetic molecules?
Plama
Solid
Gas
Liquid
In which phase of matter would you expect compound (alcohol exists) at room temperature?
Solid
gas
liquid
plasma
Which of these choices will not change the state of matter?
Temperature
Pressure
Crushing a crystal
none of the above
Out of the following which is the densest state of matter?
Solids
LIquids
Gases
Plasma
