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Total questions: 65
Worksheet time: 33mins
The arrangement of constituent particles is most ordered in
Solid state
liquid state
gaseous state
all of these
The arrangement of constituent particles is most ordered in
Solid state
liquid state
gaseous state
all of these
Which of the following is not a characteristic of matter?
Matter is made up of extremely small particles
There is no space between particles of matter
The particles of matter are continuously moving
The particles of matter attract each other.
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 of the following is correct order of forces of attraction?
Water > Air > Sand
Air > Sugar > Oil
Air < Water < Sugar
Salt > Air > Juice
Which of the following will produce severe burns ?
Cold water
Hot water
Boiling water
Steam
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 property to flow is unique to fluids. Which one of the following statements is correct?
(a) Only gases behave like fluids
(b) Gases and solids behave like fluids
(c) Gases and liquids behave like fluids
(d) Only liquids are fluids
A few substances are arranged in the increasing order of ‘forces of attraction’ between their particles. Which one of the following represents a correct arrangement?
(a) Water, air, wind
(b) Air, sugar, oil
(c) Oxygen, water, sugar
(d) Salt, juice, air
Which of the following statement is not true regarding the characteristic of matter?
(a) Particles of a matter are randomly moving in all directions.
(b) Kinetic energy of the particles increases with a rise in temperature
(c) Kinetic energy of the particles of all maters remains the same at a particular temperature.
(d) Particles of matter diffuse into each other on their own.
A form of matter has no fixed shape but it has a fixed volume. An example of this form of matter is
(a) Krypton
(b) Kerosene
(c) Carbon steel
(d) Carbon dioxide
Which one of the following sets of phenomena would increase on raising the temperature?
(a) Diffusion, evaporation, compression of gases
(b) Evaporation, compression of gases, solubility
(c) Evaporation, diffusion, expansion of gases
(d) Evaporation, solubility, diffusion, compression of gases
Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify
the correct set of conditions
(a) Low temperature, low pressure
(b) High temperature, low pressure
(c) Low temperature, high pressure
(d) High temperature, high pressure
The property to flow is unique to fluids. Which one of the following statements is correct?
(a) Only gases behave like fluids
(b) Gases and solids behave like fluids
(c) Gases and liquids behave like fluids
(d) Only liquids are fluids
During summer, water kept in an earthen pot becomes cool because of the phenomenon of
(a) diffusion
(b) transpiration
(c) osmosis
(d) evaporation
A few substances are arranged in the increasing order of ‘forces of attraction’ between their particles. Which one of the following represents a correct arrangement?
(a) Water, air, wind
(b) Air, sugar, oil
(c) Oxygen, water, sugar
(d) Salt, juice, air
On converting 25°C, 38°C and 66°C to kelvin scale, the correct sequence of temperature will be
(a) 298 K, 311 K and 339 K
(b) 298 K, 300 K and 338 K
(c) 273 K, 278 K and 543 K
(d) 298 K, 310 K and 338 K
Choose the correct statement of the following
(a) conversion of solid into vapours without passing through the liquid
state is called vapourisation.
(b) conversion of vapours into solid without passing through the liquid
state is called sublimation.
(c) conversion of vapours into solid without passing through the liquid state is called freezing.
(d) conversion of solid into liquid is called sublimation.
The boiling points of diethyl ether, acetone and n-butyl alcohol are 35°C, 56°C and 118°C respectively. Which one of the following correctly represents their boiling points in kelvin scale?
(a) 306 K, 329 K, 391 K
(b) 308 K, 329 K, 392 K
(c) 308 K, 329 K, 391 K
(d) 329 K, 392 K, 308 K
Which condition out of the following will increase the evaporation of water?
(a) Increase in temperature of water
(b) Decrease in temperature of water
(c) Less exposed surface area of water
(d) Adding common salt to water
In which of the following conditions, the distance between the molecules of hydrogen gas would increase?
(i) Increasing pressure on hydrogen contained in a closed container
(ii) Some hydrogen gas leaking out of the container
(iii) Increasing the volume of the container of hydrogen gas
(iv) Adding more hydrogen gas to the container without increasing the volume of the container
(a) (i) and (iii)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
When water at 0°C freezes to form ice at the same temperature of 0°C, then it:
(a) Absorbs some heat
(b) Releases some heat
(c) Neither absorbs nor releases heat
(d) Absorbs exactly 3.34 x 105J/kg of heat
Look at Fig. and suggest in which of the vessels A,B, C or D and arrange increasing order of rate of evaporation will be .
(a) A<B<C<D
(b) D< A<B<C
(c) A=B<C<D
(d) D< C< A=B
When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation :
(a) Rises very slowly
(b) Rises rapidly until steam is produced
(c) First rises and then becomes constant
(d) Does not rise at all
Which of the following phenomena always results in the cooling effect?
(a) Condensation
(b) Evaporation
(c) Sublimation
(d) None of these
Which of the following cannot be considered a form of matter?
(a) Atom
(b) Water
(c) Humidity
(d) Electron
Which of the following causes the temperature of a substance to remain constant while it is undergoing a change in its state?
(a) Latent heat
(b) Lattice energy
(c) Loss of heat
(d) None of these
Which of the following statement is correct?
(a) Materials existing as liquids at room temperature have their melting and boiling points lower than that of room temperature.
(b) The phenomenon involving the transition of a substance from solid to liquid state is called sublimation.
(c) To convert a temperature on the Celsius scale to Kelvin scale, subtract 273 from the given temperature
(d) The density of ice is less than that of water.
Which of the following statement is not true regarding the characteristic of matter?
(a) Particles of a matter are randomly moving in all directions.
(b) Kinetic energy of the particles increases with a rise in temperature
(c) Kinetic energy of the particles of all maters remains the same at a particular temperature.
(d) Particles of matter diffuse into each other on their own.
In which of the following conditions, the distance between the molecules of hydrogen gas would increase?
(i) Increasing pressure on hydrogen contained in a closed container
(ii) Some hydrogen gas leaking out of the container
(iii) Increasing the volume of the container of hydrogen gas
(iv) Adding more hydrogen gas to the container without increasing the volume of the container
(a) (i) and (iii)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
A form of matter has no fixed shape but it has a fixed volume. An example of this form of matter is
(a) Krypton
(b) Kerosene
(c) Carbon steel
(d) Carbon dioxide
The arrangement of constituent particles is most ordered in
Solid state
liquid state
gaseous state
all of these
Which of the following is not a characteristic of matter?
Matter is made up of extremely small particles
There is no space between particles of matter
The particles of matter are continuously moving
The particles of matter attract each other.
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.
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
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.
Which of the following is correct order of density ?
Air < Exhaust from chimneys < Honey < Water < Chalk < Cotton < Iron.
Air < Exhaust from Chimneys < Water < Honey < Cotton < Chalk < Iron.
Air < Exhaust from Chimneys < Honey < Water < Chalk < Iron < Cotton
Air < Exhaust from Chimneys < Water < Honey < Chalk < Cotton < Iron
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 physical state of a matter depends upon
temperature and pressure
temperature only
pressure only
nature of substance
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 is not correct?
SI unit of temperature is kelvin
SI unit of pressure is atm
SI unit of density is kg/m3
1 litre = 1000 cm3 = 1 dm3
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
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
Which of the following cannot be separated by sublimation?
Iodine and NaCl
Iodine and Ammonium chloride
Camphor and Sodium chloride
Naphthalene and Sand
When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment:
Air is heavier than bromine
Both air and bromine have the same density
Bromine is heavier than air
Bromine cannot be heavier than air because it is going upwards against gravity
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
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
The correct procedure of heating iron-sulphur mixture to prepare iron sulphide is: :
Heat the powder mixture at the base of the test tube using a blue flame throughout.
Heat the iron filings and sulphur mixture in the middle of the test tube using yellow flame throughout.
Heat the powder mixture at the top of the test tube using an orange flame throughout.
Heat the iron filings-sulphur mixture at 3/4 quarters of the test tube using a red flame throughout.
When water at 0°C freezes to form ice at the same temperature of 0°C, then it:
Absorbs some heat
Releases some heat
Neither absorbs nor releases heat
Absorbs exactly 3.34 x 105J/kg of heat
When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation :
Rises very slowly
Absorbs some heat
Rises rapidly until steam is produced
Does not rise at all
Which one of the following set of phenomena would increase on raising the temperature?
Diffusion, evaporation, compression of gases
Evaporation, compression of gases, solubility
Evaporation, diffusion, expansion of gases
Evaporation, solubility, diffusion, compression of gases
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 phenomena always results in the cooling effect?
Condensation
Evaporation
Sublimation
None of these
Which of the following cannot be considered a form of matter?
Atom
Water
Humidity
Electron
Which of the following causes the temperature of a substance to remain constant while it is undergoing a change in its state?
Latent heat
Lattice energy
Loss of heat
None of these
Which of the following statement is correct?
Materials existing as liquids at room temperature have their melting and boiling points lower than that of room temperature.
The phenomenon involving the transition of a substance from solid to liquid state is called sublimation.
To convert a temperature on the Celsius scale to Kelvin scale, subtract 273 from the given temperature
The density of ice is less than that of water.
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.
