MCQ Flashcards by Shaweta Mahajan

A diver is able to cut through water in a swimming pool. The property shown by the matter is.
a. the particles are of very very small
b. the particles of matter have space between them
c. the particles are in solid state
d. the particles are running here and there, have no space between them

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Which of the following is found in solid state at room temperature?
Stone
b. sand
c. mercury
d. both a and b

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The property to flow is unique to fluids. Which one of the following statements is correct?
a. Only gases behave like fluids
b. Gases & solids behave like fluids
c. Gases and liquids behave like fluids
d. Only liquids are fluids

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Temperature 200 0C equals nearly to
a. 300K
b. 373K
c. 473K
d. -73K

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During summer , water kept in an earthen pot becomes cool because of the phenomenon of
a. diffusion
b. transpiration
c. osmosis
d. evaporation

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Assertion: Smell of burning incense stick spreads all around due to the diffusion of its fumes into the air.
Reason: Increased temperature results in increased kinetic energy of the molecules.
a. Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.
b. The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.
c. Assertion is true but the Reason is false.
d. Assertion is false but the Reason is true.

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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:
(a) Air is heavier than bromine
(b) Both air and bromine have the same density
(c) Bromine is heavier than air
(d) Bromine cannot be heavier than air because it is going upwards against gravity

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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

(b) Releases some heat

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The evaporation of a liquid can best be carried out in a:
(a) Flask
(b) China dish
(c) Test tube
(d) Beaker

(b) China dish

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Zig-zag movement of the solute particle in a solution is known as
(a) Linear motion
(b) Circular motion
(c) Brownian motion
(d) Curved motion.

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: CO can be easily liquified and even solidified because
(a) It has weak forces of attraction
(b) It has comparatively more force of attraction than other gases
(c) It has more intermolecular space
(d) It is present in atmosphere.

(b) It has comparatively more force of attraction than other gases

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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

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Which of the following phenomena always results in the cooling effect?
(a) Condensation
(b) Evaporation
(c) Sublimation
(d) None of these

(b) Evaporation

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The colour of vapours formed on sublimation of iodine solid is
(a) Purple (violet)
(b) Colourless
(c) Yellow
(d) Orange

(a) Purple (violet)

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A gas which obeys the gas laws is known as:
(a) An ideal gas
(b) A heavier gas
(c) A lighter gas
(d) A real gas

(a) An ideal gas

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What s the term used to describe the phase change as a liquid becomes a solid?
(a) Evaporation
(b) Condensation
(c) Freezing
(d) None of the above

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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

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The quantity of matter present in an object is called its:
(a) Weight
(b) Gram
(c) Mass
(d) Density

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: As solid melts to form liquid:
(a) Inter particle distance increases
(b) Inter molecular forces of attraction decreases
(c) Compressibility increases
(d) All of the above

(d) All of the above

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Which of the following is not characteristic of solid:
(a) High Rigidity
(b) Regular Shape
(c) High density
(d) High compressibility

(d) High compressibility

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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

(a) 101°C at atmospheric pressure

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Which of the following has highest intermolecular forces of attraction?
(a) Water at room temperature
(b) CO gas
(c) Ethyl alcohol
(d) Iron metal

(d) Iron metal

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Which of the following substances will undergo sublimation?
(a) Common salt
(b) Odonil
(c) Sugar
(d) Sand

(b) Odonil

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The process of evaporation causes: (a) Cooling (b) Heating (c) Dryness (d) None of the above

(a) Cooling

The conversion of solid to gas directly is called: (a) Evaporation (b) Sublimation (c) Distillation (d) condensation

(b) Sublimation

Evaporation of a liquid can take place: (a) At its boiling point (b) At all temperatures (c) At its freezing point (d) At a fixed temperature

(b) At all temperatures

Which of the following describes a liquid state: (a) Definite volume and definite shape (b) Definite volume and no specific shape (c) definite shape but no definite volume (d) neither definite shape nor definite volume

(b) Definite volume and no specific shape

Wet clothes are kept for drying. Which of the following does not help them in drying: (a) Spreading it out (b) Blowing wind over it (c) Making the room a little warmer (d) Cooling the room

(d) Cooling the room

At higher altitudes the boiling points of liquids (a) Increases (b) Decreases (c) Remains the same (d) Increases then decreases

(b) Decreases

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

(a) From the surface

In which phenomenon does water change into water vapour below its boiling point: (a) Boiling (b) Evaporation (c) Freezing (d) Sublimation

(b) Evaporation

We get the smell of hot food in the kitchen outside the house because of: (a) Boiling (b) Evaporation (c) Sublimation (d) Diffusion

(d) Diffusion

Which are the favourable conditions for liquefaction of petroleum gas: (a) High pressure, high temperature (b) Low pressure, low temperature (c) High pressure, low temperature (d) Low pressure, high temperature

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

(a) Overcome forces of attraction between the liquid particles at the boiling point

Which of the following has highest density? (a) Kerosene (b) Water (c) Iron (d) Wood

Dry ice on heating produces: (a) Liquid CO (b) Gas CO2 (c) Liquid water (d) Water vapour

(b) Gas CO2

Particles move randomly in: (a) Water (b) Sugar (c) Nitrogen (d) Dry ice

: When we blow air into the balloon it inflates because: (a) Air particles diffuse into the balloon (b) Air particles collide with the walls of the balloon and exert pressure on them (c) Rubber is elastic in nature (d) The temperature of air in the balloon increases

(b) Air particles collide with the walls of the balloon and exert pressure on them

When a bottle of soda water is opened, carbon dioxide escapes, producing a fizz. This is due to: (a) Decrease in solubility on decreasing temperature (b) Decrease in solubility on increasing temperature (c) Decrease in solubility on decreasing pressure (d) Decrease in solubility on increasing pressure

A mixture of oil and water can be separated by: (a) Sublimation (b) Crystallisation (c) Chromatography (d) Separating funnel

(d) Separating funnel

Four samples A, B, C, D are prepared by adding a pinch of copper sulphate, a spatula of copper sulphate, a spatula of chalk powder, and some milk, to water respectively. 3. Which one is the colloidal solution among them? (a) C (b) D (c) B (d) A

(b) D

Four samples A, B, C, D are prepared by adding a pinch of copper sulphate, a spatula of copper sulphate, a spatula of chalk powder, and some milk, to water respectively. Which of these will form a clear and transparent solution: (a) A (b) B (c) A and B (d) B and D

Four samples A, B, C, D are prepared by adding a pinch of copper sulphate, a spatula of copper sulphate, a spatula of chalk powder, and some milk, to water respectively. Which of these will exhibit the Tyndall effect? (a) A and D (b) B and C (c) A and B (d) D

(d) D

Which of the following represents a chemical change? (a) Extraction of copper from copper pyrites (b) Distillation of water (c) Melting of wax (d) Dissolution of salt in water

(a) Extraction of copper from copper pyrites

. The sequence of steps for separating a mixture of salt, sand and camphor is: (a) Adding water, filtration, evaporation, sublimation (b) Adding water, filtration, sublimation, evaporation (c) Sublimation, adding water, filtration, evaporation (d) Sublimation, adding water, evaporation, filtration

Which of the following is the correct set of apparatus for fractional distillation? (a) Round bottomed flask, thermometer, water condenser and beaker (b) Round bottomed flask, thermometer, air condenser and beaker (c) Round bottomed flask, thermometer, fractionating column, water condenser and flask (d) Round bottomed flask, thermometer, fractionating column, air condenser and flask

In the separation of dyes A and B by chromatography, component B has more solubility in the solvent. Which component will rise faster? (a) A (b) B (c) Both at the same speed (d) Separation of dyes is independent of the solubility in solvent

(b) B

Different components can be separated from petroleum by: (a) FiltrationA (b) Chromatography (c) Simple distillation (d) Fractional distillation

(d) Fractional distillation

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: (a) Boiling (b) Melting of potassium permanganate crystals (c) Sublimation of crystals (d) Diffusion

(d) Diffusion

Question: Which of the following describes the liquid phase? (a) It has a definite shape and a definite volume (b) It has a definite shape but not a definite volume (c) It has a definite volume but not a definite shape (d) It has neither a definite shape nor a definite volume

Question: Equal volumes of all gases under similar conditions of temperature and pressure contain equal numbers of molecules. This statement was made by: (a) Gay- lussae (b) Avogadro (c) Berzilius (d) John Dalton

(b) Avogadro

0 ° C temperature is equal to (a) 0 K (b) 273 K (c)-273 K (d) 300 K

(b) 273 K

Out of the following which is the densest state of matter? (a) Solids (b) Liquids (c) Gases (d) Plasmas

(a) Solids

Rate of diffusion of a gas is: (a) Directly proportional to its density (b) Directly proportional to its molecular mass (c) Inversely proportional to the square root of its density (d) Inversely proportional to the square root of its molecular mass

(d) Inversely proportional to the square root of its molecular mass

Kinetic energy of molecules is directly proportional to (a) Temperature (b) Pressure (c) Both (a) and (b) (d) Atmospheric pressure

(a) Temperature

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

(a) Increase in temperature 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.

Which one is a sublime substance? (a) Table salt (b) Sugar (c) Iodine (d) Potassium iodide

Liquids have - (a) fixed volume and fixed shape (b) fixed shape and no fixed volume (c) fixed volume and no fixed shape (d) neither fixed volume nor fixed shape

When we add sugar in water, particles of sugar disappear because they - (a) are very small (b) get into the spaces between water particles (c) are moving (d) all above

(d) all above

Which of the following substances becomes liquid easily upon heating? (a) butter (b) glass (c) sponge (d) rubber band

(a) butter

Gases are liquefied under (a) high pressure, high temperature (b) high pressure, low temperature (c) low pressure, high temperature (d) low pressure, low temperature

(b) high pressure, low temperature

Which is not the characteristic of matter – (a) particles of a matter are continuously moving, (b) particles of matter move faster on increasing temperature, (c) particles of matter intermix with each other on their own, (d) particles of all maters have same kinetic energy.

(d) particles of all maters have same kinetic energy.

: As solid melts to form liquid: (a) Inter particle distance increases (b) Inter molecular forces of attraction decreases (c) Compressibility increases (d) All of the above

(d) All of the above

Which of the following is not characteristic of solid: (a) High Rigidity (b) Regular Shape (c) High density (d) High compressibility

(d) High compressibility

: 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

(a) 101°C at atmospheric pressure

: Which of the following has highest intermolecular forces of attraction? (a) Water at room temperature (b) CO gas (c) Ethyl alcohol (d) Iron metal

(d) Iron metal

Which of the following substances will undergo sublimation? (a) Common salt (b) Odonil (c) Sugar (d) Sand

(b) Odonil

The process of evaporation causes: (a) Cooling (b) Heating (c) Dryness (d) None of the above

(a) Cooling

The conversion of solid to gas directly is called: (a) Evaporation (b) Sublimation (c) Distillation (d) condensation

(b) Sublimation

Evaporation of a liquid can take place: (a) At its boiling point (b) At all temperatures (c) At its freezing point (d) At a fixed temperature

(b) At all temperatures

(b) Definite volume and no specific shape

Wet clothes are kept for drying. Which of the following does not help them in drying: (a) Spreading it out (b) Blowing wind over it (c) Making the room a little warmer (d) Cooling the room

(d) Cooling the room

At higher altitudes the boiling points of liquids (a) Increases (b) Decreases (c) Remains the same (d) Increases then decreases

(b) Decreases

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

(b) From the bulk

n which phenomenon does water change into water vapour below its boiling point: (a) Boiling (b) Evaporation (c) Freezing (d) Sublimation

(b) Evaporation

We get the smell of hot food in the kitchen outside the house because of: (a) Boiling (b) Evaporation (c) Sublimation (d) Diffusion

(d) Diffusion

(a) Overcome forces of attraction between the liquid particles at the boiling point

Which of the following has highest density? (a) Kerosene (b) Water (c) Iron (d) Wood

Dry ice on heating produces: (a) Liquid CO (b) Gas CO2 (c) Liquid water (d) Water vapour

(b) Gas CO2

Particles move randomly in: (a) Water (b) Sugar (c) Nitrogen (d) Dry ice

When we blow air into the balloon it inflates because: (a) Air particles diffuse into the balloon (b) Air particles collide with the walls of the balloon and exert pressure on them (c) Rubber is elastic in nature (d) The temperature of air in the balloon increases

(b) Air particles collide with the walls of the balloon and exert pressure on them

Cations migrate to _______ during electrolysis. (a) Migrate to both cathode and anode (b) cathode (c) do not migrate to either cathode or anode (d) anode

(b) cathode

Liquids have ______ shape and _____ volume. (a) definite, definite (b) definite, indefinite (c) indefinite, definite (d) indefinite, indefinite.

The inter particle distances are maximum in _________ and minimum in ___________ (a) solids, liquids (b) solids, gases (c) gases, solids (d) liquids, solids.

The inter particle forces of attraction is maximum in _______ and minimum in ______ (a) solids, liquids (b) solids, gases (c) gases, solids (d) liquids, solids.

(b) solids, gases

Conversion of solid to gas is called (a) vapourisation (b) condensation (c) liquefaction (d) sublimation.

(d) sublimation.

The conversion that takes place at room temperature is (a) boiling (b) evaporation (c) melting (d) freezing.

(b) evaporation

: Number of protons in parent atom is ______ the anion. (a) greater than (b) smaller than (c) equal to (d) can be greater or smaller than.

Number of electrons in parent atom is _______ the cation. (a) greater than (b) smaller than (c) equal to (d) can be greater or smaller than.

(a) greater than

The formula of hydroxide radical is: (a) H+ (b) H3O+ (c) OH– (d) H–.

Which is not a pure substance in the four options given? (a) alloy (b) sugar (c) distilled water (d) copper wire.

(a) alloy

The characteristic property of mater is / are (a) it has mass (b) it has volume (c) it can be perceived by our senses (d) all three (A, B & C)

(d) all three (A, B & C)

The increasing order of inter particle attractions of sugar, oxygen, gold, water is (a) sugar < oxygen < gold < water (b) sugar > oxygen > gold > water (c) oxygen < water < sugar < gold (d) oxygen > water > sugar > gold.

The pressure exerted by a gas is due to (a) inter particle collisions (b) collisions with the walls of the container (c) gravity (d) atmospheric pressure.

(b) collisions with the walls of the container

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 (a) particles of matter are constantly moving (b) the perfume is strong (c) the room has fan which circulates the perfume (d) none of these.

(a) particles of matter are constantly moving

The matter that has stronger inter particle forces between an iron piece and a chalk piece is: (a) iron (b) chalk piece (c) both (d) neither.

(a) iron

The quantity of matter in 1 kg of cotton is _______ that present in 1 kg of sugar. (a) smaller than (b) greater than (c) equal to (d) can not say

(b) greater than

The volume of matter in 1 kg of cotton is ____ that present in 1 kg of sugar. (a) smaller than (b) grater than (c) equal to (d) can not say.

(b) grater than

The type of motion that is present in solids is: (a) random (b) linear (in a straight line) (c) vibratory (d) circular.

The type of motion that is present in liquids is: (a) random (b) linear (in a straight line) (c) vibratory (d) circular.

(a) random

The type of motion that is present in gases is: (a) random (b) linear (in a straight line) (c) vibratory (d) circular.

(a) random

The physical state of matter whose volume can change significantly by changing pressure only is: (a) solid (b) gas (c) liquid (d) all three

(b) gas

The physical state of matter whose volume can change significantly by changing temperature only is: (a) solid (b) gas (c) liquid (d) all three.

(d) all three.

: The density of matter will be highest in which state? (a) solid (b) liquid (c) gas (d) can not say.

(a) solid

The kinetic energy of the particles of a given substance will be least in (a) solid state (b) liquid state (c) gaseous state (d) can not say.

(a) solid state

As solid melts to form liquid: (a) All of the above (b) Inter particle distance increases (c) Inter molecular forces of attraction decreases (d) Compressibility increases

(a) All of the above

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 air in the balloon increases

(a) Air particles collide with the walls of the balloon and exert pressure on them

Particles move randomly in: (a) Water (b) Nitrogen (c) Sugar (d) Dry ice

(b) Nitrogen

: 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

(a) Overcome forces of attraction between the liquid particles at the boiling point

which are the favourable conditions for liquefaction of petroleum gas: (a) Low pressure, high temperature (b) High pressure, high temperature (c) High pressure, low temperature (c) Low pressure, low temperature

: We get the smell of hot food in the kitchen outside the house because of: (a) Diffusion (b) Boiling (c) Evaporation (d) Sublimation

(a) Diffusion

In which phenomenon does water change into water vapour below its boiling point: (a) Sublimation (b) Boiling (c) Freezing (d) Evaporation

(d) Evaporation

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

(a) From the surface

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

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

(a) Definite volume and no specific shape

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

(a) At all temperatures

Which of the following has highest intermolecular forces of attraction? (a) Iron metal (b) Water at room temperature (c) CO2 gas (d) Ethyl alcohol

(a) Iron metal

Which of the following is not characteristic of solid: (a) High compressibility (b) High Rigidity (c) Regular Shape (d) High density

(a) High compressibility

The state of matter where matter is condensed is: (i) solid state (ii) liquid state (iii) gaseous state (a) (i) and (iii) (b) (ii) and (iii) (c) (i) and (ii) (d) (i), (ii) and (iii)

(iii)gaseous state

MCQ Flashcards

(122 cards)