Matter in our surroundings MCQs with Answers

Question-1. A gas which obeys the gas laws is known as:

1. A heavier gas
2. A lighter gas
3. A real gas
4. An ideal gas

Question-2. A mixture of oil and water can be separated by

1. Crystallisation
2. Chromatography
3. Separating funnel
4. Sublimation

Question-3. As solid melts to form liquid:

1. Inter molecular forces of attraction decreases
2. Compressibility increases
3. All of the above
4. Inter particle distance increases

Question-4. At higher altitudes the boiling points of liquids

1. Decreases
2. Remains the same
3. Increases then decreases
4. Increases

Question-5. Cations migrate to…..............during electrolysis

1. cathode
2. do not migrate to either cathode or anode
3. anode.
4. Migrate to both cathode and anode

Question-6. CO2 can be easily liquified and even solidified because

1. It has comparatively more force of attraction than other gases
2. It has more intermolecular space
3. It is present in atmosphere
4. It has weak forces of attraction

Question-7. Conversion of solid to gas is called

1. condensation
2. liquefaction
3. sublimation
4. vapourisation

Question-8. Different components can be separated from petroleum by:

1. Chromatography
2. Simple distillation
3. Fractional distillation
4. FiltrationA

Question-9. Dry ice on heating produces:

1. Gas CO2
2. Liquid water
3. Water vapour
4. Liquid CO2

Question-10. During evaporation particles of a liquid change into vapours :

1. From the bulk
2. From the bottom
3. From all over the liquid
4. From the surface

Question-11. Equal volumes of all gases under similar conditions of temperature and pressure contain equal numbers of molecules. This statement was made by:

1. Avogadro
2. Berzilius
3. John Dalton
4. Gay- lussae

Question-12. Evaporation of a liquid can take place:

1. At all temperatures
2. At its freezing point
3. At a fixed temperature
4. At its boiling point

Question-13. Gases are liquefied under

1. high pressure, low temperature
2. low pressure, high temperature
3. low pressure, low temperature
4. high pressure, high temperature

Question-14. If a perfume bottle is opened in one corner of a room, the smell can be felt after sometime in the opposite corner. This shows that

1. the perfume is strong
2. the room has fan which circulates the perfume
3. none of these.
4. particles of matter are constantly moving

Question-15. In the separation of dyes A and B by chromatography, component B has more solubility in the solvent. Which component will rise faster?

1. B
2. Both at the same speed
3. Separation of dyes is independent of the solubility in solvent
4. A

Question-16. In which phenomenon does water change into water vapour below its boiling point:

1. Evaporation
2. Freezing
3. Sublimation
4. Boiling

Question-17. Kinetic energy of molecules is directly proportional to

1. Pressure
2. Both (a&b)
3. Atmospheric pressure
4. Temperature

Question-18. Latent heat of vapourisation is used to:

1. Overcome forces of attraction between solid particles at the freezing point
2. Increase the kinetic energy of particles in the liquid state
3. Increase the kinetic energy of the particles in the vapour phase
4. Overcome forces of attraction between the liquid particles at the boiling point

Question-19. Liquids have -

1. fixed shape and no fixed volume
2. fixed volume and no fixed shape
3. neither fixed volume nor fixed shape
4. fixed volume and fixed shape

Question-20. Number of electrons in parent atom is…............the cation

1. smaller than
2. equal to
3. can be greater or smaller than.
4. greater than

Question-21. Number of protons in parent atom is….........the anion

1. smaller than
2. equal to
3. can be greater or smaller than.
4. greater than

Question-22. Out of the following which is the densest state of matter?

1. Liquids
2. Gases
3. Plasmas
4. Solids

Question-23. Particles move randomly in:

1. Sugar
2. Nitrogen
3. Dry ice
4. Water

Question-24. Rate of diffusion of a gas is:

1. Directly proportional to its molecular mass
2. Inversely proportional to the square root of its density
3. Inversely proportional to the square root of its molecular mass
4. Directly proportional to its density

Question-25. The boiling point of water is:

1. 273K at atmospheric pressure
2. 0°C at atmospheric pressure
3. 0K at atmospheric pressure
4. 101°C at atmospheric pressure

Question-26. The characteristic property of mater is / are

1. it has volume
2. it can be perceived by our senses
3. all three (A, B & C)
4. it has mass

Question-27. The colour of vapours formed on sublimation of iodine solid is

1. Colourless
2. Yellow
3. Orange
4. Purple (violet)

Question-28. The conversion of solid to gas directly is called:

1. Sublimation
2. Distillation
3. condensation
4. Evaporation

Question-29. The conversion that takes place at room temperature is

1. evaporation
2. melting
3. freezing
4. boiling

Question-30. The density of matter will be highest in which state?

1. liquid
2. gas
3. can not say
4. solid

Question-31. The evaporation of a liquid can best be carried out in a:

1. China dish
2. T est tube
3. Beaker
4. Flask

Question-32. The formula of hydroxide radical is:

1. H3O+
2. OH?
3. H?
4. H+

Question-33. The increasing order of inter particle attractions of sugar, oxygen, gold, water is

1. sugar > oxygen > gold > water
2. oxygen < water < sugar < gold
3. oxygen > water > sugar > gold
4. sugar < oxygen < gold < water

Question-34. The inter particle distances are maximum in…..............and minimum in…..............

1. solids, gases
2. gases, solids
3. liquids, solids
4. solids, liquids

Question-35. The kinetic energy of the particles of a given substance will be least in

1. liquid state
2. gaseous state
3. can not say
4. solid state

Question-36. The matter that has stronger inter particle forces between an iron piece and a chalk piece is:

1. chalk piece
2. both
3. neither
4. iron

Question-37. The physical state of matter whose volume can change significantly by changing pressure only is:

1. gas
2. liquid
3. all three
4. solid

Question-38. The pressure exerted by a gas is due to

1. collisions with the walls of the container
2. gravity
3. atmospheric pressure
4. inter particle collisions

Question-39. The process of evaporation causes:

1. Heating
2. Dryness
3. None of the above
4. Cooling

Question-40. The quantity of matter in 1 kg of cotton is _______ that present in 1 kg of sugar

1. greater than
2. equal to
3. can not say.
4. smaller than

Question-41. The quantity of matter present in an object is called its:

1. Gram
2. Mass
3. Density
4. Weight

Question-42. The sequence of steps for separating a mixture of salt, sand and camphor is

1. Adding water, filtration, sublimation, evaporation
2. Sublimation, adding water, filtration, evaporation
3. Sublimation, adding water, evaporation, filtration
4. Adding water, filtration, evaporation, sublimation

Question-43. The type of motion that is present in gases is:

1. linear (in a straight line)
2. vibratory
3. circular
4. random

Question-44. The type of motion that is present in liquids is:

1. linear (in a straight line)
2. vibratory
3. circular
4. random

Question-45. The type of motion that is present in solids is:

1. linear (in a straight line)
2. vibratory
3. circular
4. random

Question-46. The volume of matter in 1 kg of cotton is…..............that present in 1 kg of sugar

1. grater than
2. equal to
3. can not say.
4. smaller than

Question-47. We get the smell of hot food in the kitchen outside the house because of:

1. Evaporation
2. Sublimation
3. Diffusion
4. Boiling

Question-48. Wet clothes are kept for drying. Which of the following does not help them in drying:

1. Spreading it out
2. Blowing wind over it
3. Making the room a little warmer
4. Cooling the room

Question-49. Wet clothes are kept for drying. Which of the following does not help them in drying:

1. Blowing wind over it
2. Making the room a little warmer
3. Cooling the room
4. Spreading it out

Question-50. What s the term used to describe the phase change as a liquid becomes a solid?

1. Condensation
2. Freezing
3. None of the above
4. Evaporation

Question-51. When a bottle of soda water is opened, carbon dioxide escapes, producing a fizz. This is due to:

1. Decrease in solubility on increasing temperature
2. Decrease in solubility on decreasing pressure
3. Decrease in solubility on increasing pressure
4. Decrease in solubility on decreasing temperature

Question-52. 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:

1. Both air and bromine have the same density
2. Bromine is heavier than air
3. Bromine cannot be heavier than air because it is going upwards against gravity
4. Air is heavier than bromine

Question-53. When water at 0°C freezes to form ice at the same temperature of 0°C, then it:

1. Releases some heat
2. Neither absorbs nor releases heat
3. Absorbs exactly 3.34 x 105J/kg of heat
4. Absorbs some heat

Question-54. When we add sugar in water, particles of sugar disappear because they -

1. get into the spaces between water particles
2. are moving
3. all above
4. are very small

Question-55. When we blow air into the balloon it inflates because:

1. Air particles collide with the walls of the balloon and exert pressure on them
2. Rubber is elastic in nature
3. The temperature of air in the balloon increases
4. Air particles diffuse into the balloon

Question-56. When we put some crystals of potassium permanganate in a beaker containing water, we observe that after sometime whole water has turned pink. This is due to:

1. Melting of potassium permanganate crystals
2. Sublimation of crystals
3. Diffusion
4. Boiling

Question-57. Which are the favourable conditions for liquefaction of petroleum gas:

1. Low pressure, low temperature
2. High pressure, low temperature
3. Low pressure, high temperature
4. High pressure, high temperature

Question-58. Which condition out of the following will increase the evaporation of water?

1. Decrease in temperature of water
2. Less exposed surface area of water
3. Adding common salt to water
4. Increase in temperature of water

Question-59. Which is not a pure substance in the four options given?

1. sugar
2. distilled water
3. copper wire
4. alloy

Question-60. Which is not the characteristic of matter ?

1. particles of matter move faster on increasing temperature,
2. particles of matter intermix with each other on their own,
3. particles of all maters have same kinetic energy
4. particles of a matter are continuously moving,

Question-61. Which of the following describes a liquid state:

1. Definite volume and no specific shape
2. definite shape but no definite volume
3. neither definite shape nor definite volume
4. Definite volume and definite shape

Question-62. Which of the following has highest density?

1. Water
2. Iron
3. Wood
4. Kerosene

Question-63. Which of the following has highest intermolecular forces of attraction?

1. CO2 gas
2. Ethyl alcohol
3. Iron metal
4. Water at room temperature

Question-64. Which of the following is not characteristic of solid:

1. Regular Shape
2. High density
3. High compressibility
4. High Rigidity

Question-65. Which of the following is the correct set of apparatus for fractional distillation?

1. Round bottomed flask, thermometer, air condenser and beaker
2. Round bottomed flask, thermometer, fractionating column, water condenser and flask
3. Round bottomed flask, thermometer, fractionating column, air condenser and flask
4. Round bottomed flask, thermometer, water condenser and beaker

Question-66. Which of the following phenomena always results in the cooling effect?

1. Evaporation
2. Sublimation
3. None of these
4. Condensation

Question-67. Which of the following phenomena would increase on raising the temperature?

1. Evaporation, compression of gases, solubility
2. Evaporation, diffusion, expansion of gases
3. Evaporation, solubility, diffusion, compression of gases
4. Diffusion, evaporation, compression of gases

Question-68. Which of the following represents a chemical change?

1. Distillation of water
2. Melting of wax
3. Dissolution of salt in water
4. Extraction of copper from copper pyrites

Question-69. Which of the following statement is not true regarding the characteristic of matter?

1. Kinetic energy of the particles increases with a rise in temperature
2. Kinetic energy of the particles of all maters remains the same at a particular temperature.
3. Particles of matter diffuse into each other on their own.
4. Particles of a matter are randomly moving in all directions

Question-70. Which of the following substances becomes liquid easily upon heating?

1. glass
2. sponge
3. rubber band
4. butter

Question-71. Which of the following substances will undergo sublimation?

1. Odonil
2. Sugar
3. Sand
4. Common salt

Question-72. Which of these will exhibit the Tyndall effect?

1. B and C
2. A and B
3. D
4. A and D

Question-73. Which of these will form a clear and transparent solution

1. B
2. A and B
3. B and D
4. A

Question-74. Which one is a sublime substance?

1. Sugar
2. Iodine
3. Potassium iodide
4. Table salt

Question-75. Zig-zag movement of the solute particle in a solution is known as

1. Circular motion
2. Brownian motion
3. Curved motion
4. Linear motion

Question-76. 0 ° C temperature is equal to

1. 273 K
2. -273 K
3. 300 K
4. 0 K