WorksheetsMatter in our surroundings
Total questions: 25
Worksheet time: 13mins
which of the following is matter
air
stone
cloud
all of them
when 2-3 crystals of potassium permanganate are dissolved in water, the colour of water will be
blue
green
yellow
purple pink
when 2-3 crystals of copper sulphate is added to a glass of water ,the colour developed is
blue
green
red
yellow
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
What is the full form of CNG?
Cairo Nitro Gasoline
Car Need Gas
Compressed Natural Gas
Congress Natural Gas
Seema took a 100 ml beaker and filled half the beaker with water and marked the level of water. She dissolved some salt with the help of a glass rod and recorded water level again.
The water level increases appreciably
The water level decreases
The water level remains the same
There is little increase in water level.
Which one of the following sets of phenomenon would increase on raising the temperature?
Diffusion, evaporation and compression of gases
Evaporation, compression of gases and solubility of solid in liquid
Evaporation, diffusion, expansion of gases and solubility of solid in liquid
Evaporation, solubility of gas in liquid, diffusion and compression of gases.
Shivam visited an LPG unit and found that the gas can be liquified at specific conditions of temperature and pressure. Help him to identify the correct set of conditions.
High temperature and high pressure.
Low temperature and low pressure.
Low temperature and high pressure.
High temperature and low pressure.
During summer, water kept in earthen pot becomes cool due to phenomenon of
Diffusion
Transpiration
Distillation
Evaporation
Which of the following is correct order of forces of attraction?
Water > Air > Sand
Air > Sugar > Oil
Air < Water < Sugar
Salt > Air > Juice
If we keep cold drink bottle in freezer, what will happen?
Water will change into ice
Cold drink bottle will break
CO2 gas will get solidified
Nothing happens.
Choose the correct statement out of the following
Conversion of solid into vapours without becoming liquid is called evaporation.
Conversion of vapours into solid without becoming liquid is called sublimation
Conversion of solid into liquid is called sublimation.
Conversion of liquid into vapours is called fusion.
Which of the following will produce severe burns ?
Cold water
Hot water
Boiling water
Steam
Which of the following conditions will increase the rate of evaporation?
Increase in temperature of water
Decrease in wind speed
Decrease in surface area of water
Adding sugar to water
Which of the following is incorrect?
Solids have fixed shape and fixed volume.
Liquids have fixed volume but not shape
Gases have neither fixed shape nor volume
The particles have least intermolecular space but maximum kinetic energy in liquids.
Ice floats on water because
it has higher density than water
it has lower density than water due to more volume
it is solid
it is low melting solid
The boiling point of water at higher altitude is
373 K
< 373 K
> 373 K
273 K
Latent heat of fusion is amount of
heat energy required to change 1 kg solid into liquid completely at its melting point.
heat energy required to convert 1 kg solid into liquid at room temperature
heat energy required to change 1 g of solid into liquid completely
heat energy required to change 1 kg of solid into liquid at any temperature.
The temperature at which vapour pressure of liquid becomes equal to atmospheric pressure is called
melting point
boiling point.
ignition temperature
sublimation temperature.
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
The arrangement of constituent particles is most ordered in
Solid state
liquid state
gaseous state
all of these
What is physical state of water at 100 degree Celsius
Liquid
gas
Liquid and gas both
None of the above
The process in which solid changes into vapours directly without becoming liquid is called
Condensation
Sublimation
Solid ification
Fusion
Factors on which evaporation depends
Surface area
Temperature
Humidity
All of the above
