Q 1 – ‘Panch Tatva’ of life.
a) Air, god, water, mother, father
b) Air, fire, earth, sky, water
c) Air, god, water, soil, crop
d) Air, god, water, yield, money
Air, fire, earth, sky, water
Q 2 – Matter is classified on the basis of………….
a) Physical and chemical properties
b) Physical and biological properties
c) chemical properties
d) Biological and characteristical properties.
Physical and chemical properties
Q 3 – Which of the following 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
(c) Evaporation, diffusion, expansion of gases
Q 4 – The property of 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
(c) Gases and liquids behave like fluids
Q 5 – The property of 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
(c) Gases and liquids behave like fluids
Q 6 – When Potassium per magnet dissolve in water shows…………
a) Red in color
b) Blue in color
c) Violet in color
d) Orange in color
Violet in color
Q 7 – During summer, water kept in an earthen pot becomes cool because of the phenomenon of
(a) diffusion
(b) transpiration
(c) osmosis
(d) evaporation
(d) evaporation
Q 8 – Wet clothes are kept for drying. Which of the following does not help them in drying:
a) Cooling the room
b) Spreading it out
c) Blowing wind over it
d) Making the room a little warmer
a) Cooling the room
Q 9 – 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
(c) Oxygen, water, sugar
Q 10 – It is state of matter
a) Soil
b) Air
c) Water
d) Gas
d) Gas
Q 11 – On converting 25°C, 38°C and 66°C to Kevlin 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
(a) 298 K, 311 K and 339 K
Q 12 – Eraser, book, slate is solid matter which does not has.
a) Definite shape
b) Distinct boundaries
c) Fixed velocity
d) Fixed volume
d) Fixed volume
Q 13 – Choose the correct statement from the following:
(a) Conversion of solid into vapor without passing through the liquid state is called vapourization.
(b) Conversion of vapor into solid without passing through the liquid state is called sublimation.
(c) Conversion of vapor into solid without passing through the liquid state is called freezing.
(d) Conversion of solid into liquid is called sublimation.
(b) Conversion of vapour into solid without passing through the liquid state is called sublimation.
Q 14 – Solid have…………..
a) Negligible compatible
b) Negligible compressible
c) Negligible volume
d) Negligible shape
c) Negligible compressible
Q 15 – Which condition out of the following will increase the evaporation of water?
(a) Increase in temperature of the water
(b) Decrease in temperature of the water
(c) Less exposed surface area of water
(d) Adding common salt to the water
(a) Increase in temperature of water
Q 16 – Water at 0 degree Celsius showing the temperature at _______ K
a) 274
b) 273
c) 277
d) 275
(b) 273
Q 17 – 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)
(c) (ii) and (iii)
Q 18 – Unit of pressure is
a) Joule
b) Kelvin
c) Kg
d) Pa
(d) Pa
Q 19 – The boiling point of water at sea level is
(a) 0°C
(b) 273 K
(c) 373 K
(d) 273°C
(c) 373 K
Q 20 – Choose the correct statement from the following:
(a) Conversion of solid into vapour without passing through the liquid state is called vapourisation.
(b) Conversion of vapour into solid without passing through the liquid state is called sublimation.
(c) Conversion of vapour into solid without passing through the liquid state is called freezing.
(d) Conversion of solid into liquid is called sublimation.
(b) Conversion of vapour into solid without passing through the liquid state is called sublimation.
Q 21 – Heat energy equals to………….
a) Latent heat of vaporization is absorbed from the body
b) 1 kelvin of water
c) 100 degree
d) 1 joule of energy
(a) Latent heat of vaporization is absorbed from the body
Q 22 – Which of the following conditions is most favourable for converting a gas into a liquid?
(a) High pressure, low temperature
(b) Low pressure, low temperature
(c) Low pressure, high temperature
(d) High pressure, high temperature
Ans – (a) High pressure, low temperature
Q 23 – The boiling point of water is:
a) 101 C at atmospheric pressure
b) 273K at atmospheric pressure
c) 0 C at atmospheric pressure
d) 0K at atmospheric pressure
Ans – 101 C at atmospheric pressure
Q 24 – Dry ice is
(a) water in solid-state
(b) water in a gaseous state
(c) CO2 in a liquid state
(d) CO2 in solid-state
Ans – (d) CO2 in solid state
Q 25 – Which among these will be a more complicated mishap
a. Burn due to spillage of hot water
b. Spillage of boiling water
c. Exposure of heated steam at 100ºc
d. None
Ans – c. Exposure of heated steam at 100ºc
Q 26 – As solid melts to form liquid:
a) Compressibility increases
b) Interparticle distance increases
c) Intermolecular forces of attraction decreases
d) All of the above
Ans – d) All of the above
Q 27 – When we blow air into the balloon it inflates because:
a) Air particles collide with the walls of the balloon and exert pressure on them
b) Air particles diffuse into the balloon
c) Rubber is elastic in nature
d) The temperature of the air in the balloon increases
Ans – a) Air particles collide with the walls of the balloon and exert pressure on them
Q 28 – Evaporation of a liquid can take place:
a) At all temperatures
b) At its boiling point
c) At its freezing point
d) At a fixed temperature
Ans – a) At all temperatures
Q 29 – Particles move randomly in:
a) Nitrogen
b) Water
c) Sugar
d) Dry ice
Ans – a) Nitrogen
Q 30 – Which of the following describes a liquid state:
a) Definite volume and no specific shape
b) Definite volume and definite shape
c) definite shape but no definite volume
d) neither definite shape nor definite volume
Ans – a) Definite volume and no specific shape
Q 31 – Which of the following has the highest density?
a) Iron
b) Kerosene
c) Water
d) Wood
Ans – a) Iron
Q 32 – The conversion of solid to gas directly is called:
a) Distillation
b) Evaporation
c) Sublimation
d) Condensation
Ans- c) Sublimation
Q 33 – latent heat of vapourisation is used to:
a) Overcome forces of attraction between the liquid particles at the boiling point
b) Overcome forces of attraction between solid particles at the freezing point
c) Increase the kinetic energy of particles in the liquid state
d) Increase the kinetic energy of the particles in the vapour phase
Ans – a) Overcome forces of attraction between the liquid particles at the boiling point
Q 34 – Heating the bottom of the steel pot filled with water heats the water at the top also. This happens due to:
a. Conduction
b. Convection
c. Radiation
d. None
Ans – b. Convection
Q 35 – We get the smell of hot food in the kitchen outside the house because of:
a) Diffusion
b) Boiling
c) Evaporation
d) Sublimation
Ans – a) Diffusion
Q 36 – Which of the following substances will undergo sublimation?
a) Odonil
b) Common salt
c) Sugar
d) Sand
Ans – Odonil
Q 37 – During evaporation particles of a liquid change into vapours :
a) From the surface
b) From the bulk
c) From the bottom
d) From all over the liquid
Ans – a) From the surface
Q 38 – Which among these will have no shape but a fixed volume
a. An aluminum pot.
b. An iron chisel.
c. Mustard oil
d. Plastic bottle
Ans – c. Mustard oil
Q 39 – At higher altitudes the boiling points of liquids
a) Decreases
b) Increases
c) Increases then decreases
d) Remains the same
Ans – a) Decreases
Q 40 – Heating ice converts ice into water. This energy is constant and is equal to
a. 224 joule/gm
b. 334 joule/gm
c. 2230 joule/gm
d. 2434 joule/gm
Ans- b. 334 joule/gm
Q 41 – Wet clothes are kept for drying. Which of the following does not help them in drying:
a) Cooling the room
b) Spreading it out
c) Blowing wind over it
d) Making the room a little warmer
Ans – a) Cooling the room