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15 questions
The amount of heat which is used to change the state of matter not for increase the temperature is called
Latent heat
Specific heat
Heat capacity
None of the above.
Which of the following will produce severe burns ?
Cold water
Hot water
Boiling water
Steam
In which form, do the water molecules have less kinetic
energy?
(a) Ice
(b) Water
(c) Steam
(d) All of them have equal kinetic energy
At what temperature liquid water and steam co-exist?
At the melting point of ice
At the boiling point of water
At the freezing point of water
At the condensation point
Melting point of ice is
273.16K
373.15K
100°C
250.18K
When a solid is heated it's particles begin to vibrate with energy
true
false
Latent heat of vapourisation is amount of
heat energy required to change 1 kg liquid into vapours completely at its melting point.
heat energy required to convert 1 kg solid into liquid at room temperature
heat energy required to change 1 kg liquid into vapours completely at its boiling point.
heat energy required to change 1 kg of solid into liquid at any temperature.
which of the following is matter
air
stone
cloud
all of them
the 'panch tatva' or five basic elements are air,water,fire,earth and ___________?
trees
animals
sky
moon
do you think particles of matter have spaces between them?
yes
no
do you think the particles of matter are continuously moving?
yes
no
as the temperature rises, particles of matter move
fast
slow
not effected
none of them
intermixing of two different types of matter on their own is called:
fusion
diffusion
vaporisation
condensation
Do particles of matter attract each other
Yes
No
Which of the following has minimum kinetic energy ?
Particles of ice below 0 °C
Particles of water at 0 °C
Particles of water at 100 °C
Particles of steam at 100 °C
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