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Q 1.
Convert 573k into degree Fahrenheit?
Ans.
572 degree Fahrenheit.
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Q 2.
Water at 100 degree Celsius exist in which state?
Ans.
Liquid.
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Q 3.
Convert 300k into Celsius scale?
Ans.
27 degree Celsius.
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Q 4.
Intermixed of particles of two different types of matter on their own is called?
Ans.
Diffusion.
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Q 5.
Intermixed of particles of two different types of matter on their own is called?
Ans.
Diffusion.
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Q 6.
When the temperature increases, kinetic energy of particles of matter?
Ans.
Increases.
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Q 7.
What is the boiling point of water at sea level?
Ans.
100°C or 373K.
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Q 8.
In all states of matter( Solid, Liquid and gas) what is the chemical composition of water?
Ans.
Remains same.
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Q 9.
What type of phenomenon is evaporation?
Ans.
Surface phenomenon.
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Q 10.
Define boiling?
Ans.
It is a bulk phenomenon. Particles from bulk of liquid change into vapour state.
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Q 11.
Define deposition?
Ans.
It is the change of gaseous state directly to solid state without going through liquid state.
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Q 12.
Define sublimation?
Ans.
It is the change of solids state directly to gaseous state without going through liquid state.
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Q 13.
Where the spaces in between the constitutent particles and kinetic energy of the particles are maximum?
Ans.
In gases.
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Q 14.
Where the spaces in between the constituent particles and kinetic energy of the particles are intermediate?
Ans.
In liquids.
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Q 15.
Where the spaces in between the constituent particles and kinetic energy of the particles are minimum?
Ans.
In solids.
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Q 16.
Where the forces of attraction between the particles are minimum?
Ans.
In gases.
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Q 17.
Where the forces of attraction between the particles are intermediate?
Ans.
In liquids.
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Q 18.
Where the forces of attraction between the particles are maximum?
Ans.
In solids.
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Q 19.
Matter is made up of?
Ans.
Small particles.
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Q 20.
The mass per unit volume of a substance is called?
Ans.
Density.
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Q 21.
Full form of CNG?
Ans.
Compressed Natural Gas.
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Q 22.
Full form of LPG?
Ans.
Liquified Petroleum Gas.
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Q 23.
What are the different states of matter?
Ans.
Solid, Liquid and Gas.
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Q 24.
Examples of matter?
Ans.
Chair, air, lemon and water.
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Q 25.
The smell of hot sizzling food reaches you several meters away, but to get the smell from cold food you have to go close why?
Ans.
Because of increasing in temperature and increasing in kinetic energy of hot food.
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Q 26.
A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?
Ans.
Because of weak water molecules.
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