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WorksheetsMatter in our surroundings
Total questions: 20
Worksheet time: 4mins
Due to increase in temperature, the particles vibrate with greater ………………
Speed
Distance
Movement
Time
In gaseous state, molecules can move ……………..
only in one direction
only in a fixed path
randomly in all directions
upward and downward only
The gases are highly compressible because …………….
The molecules move randomly
the molecular force of attraction is very weak
The separation between molecules is very large
The separating force is strong
The state of matter can be changed by varying ……………….
pressure
volume
mass
Temperature
On heating, a solid is converted to liquid. This change is called ………………..
Melting
Fusion
Diffusion
Freezing
The conversion of a liquid into vapour by heating is …………….
Melting
Condensation
Freezing
Evaporation
Gases have neither definite shape not definite ……………
Mass
Volume
Weight
Rigidity
The substances that does not have definite shape but definite mass is …………..
Solid
Matter
Liquid
Plasma
When Heat Is Constantly Supplied By A Gas Burner With Small Flame To Melt Ice, Then The Temperature Of Ice During Melting:
Increases very slowly
Does not increase at all
First remains constant and then increases
Increases to form liquid water
Which Condition Out Of The Following Will Increase The Evaporation Of Water?
Increase in temperature of water
Decrease in temperature of water
Less exposed surface area of water
Adding common salt to water
Which One Of The Following Set Of Phenomena Would Increase On Raising The Temperature?
Evaporation, compression of gases, solubility
Evaporation, diffusion, expansion of gases
Evaporation, solubility, diffusion, compression of gases
Diffusion, evaporation, compression of gases
When Water At 0°C Freezes To Form Ice At The Same Temperature Of 0°C, Then It:
Absorbs some heat
Releases some heat
Absorbs exactly 3.34 × 10 to the power 5 J/kg of heat
Neither absorbs nor releases heat
Choose The Correct Statement Of The Following:
Conversion of solid into vapours without passing through the liquid state is called vapourisation.
Conversion of vapours into solid without passing through the liquid state is called sublimation.
Conversion of vapours into solid without passing through the liquid state is called freezing.
Conversion of solid into liquid is called sublimation.
The Evaporation Of Water Increases Under The Following Conditions:
Increase in temperature, decrease in surface area
Increase in surface area, decrease in temperature
Increase in surface area, rise in temperature
Increase in temperature, increase in surface area, addition of common salt
During Summer, Water Kept In An Earthen Pot Becomes Cool Because Of The Phenomenon Of
Diffusion
Transpiration
Osmosis
Evaporation
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
Read The Following Sentences Carefully, And Choose The Correct One:
The spreading of purple colour of potassium permanganate into water, on its own, is due to the diffusion of potassium permanganate particles into water.
The spreading of ink in water, on its own, is due to the diffusion of ink particle into water.
The diffusion of a solid substance into another solid substance is so slow that many people think that diffusion does not take place in solids.
All the above.
Consider The Following Statements And Choose The Correct One(S):
The temperature at which a solid substance melts and changes into a liquid at atmospheric pressure is called melting point of the substance.
When a solid is heated sufficiently it changes its physical state and becomes a liquid.
The melting point of a solid is a measure of the force of attraction between its particles as atoms or molecules.
All the above.
Assertion: We are able to sip hot tea or milk faster from a saucer rather than a cup.
Reason: The larger is the surface area more is, the more evaporation. Thus, evaporation is faster in a saucer causing more cooling than in a cup. For this reason, we can sip hot tea or milk faster from a saucer than a cup.
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
Assertion: The rate of diffusion of liquids is lesser than that of solids.
Reason: This is due to the fact that in the liquid state, particles move freely and have a greater space between each other as compared to particles in the solid state.
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
