Chapter 2 : Multiple Choice Question

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Multiple Choice Question

1.            Which is the colored gas?

(i)           H2                           (ii)          02                           (iii)         N02                                        (iv)         He


2.            Atmosphere pressure is measured by

(i)           Nanometer        (ii)          Barometer          (iii)         Thermometer                   (iv)         Ammeter


3              One atmosphere is equal to

(i)           76 torr                   (ii)          760 torr                (iii)         7.6 torr                                 (iv)         7600 torr


4              At constant temperature volume of given mass of a gas in inversely proportional to pressure on it this is a statement of

(i) Charle’s law                  (ii)          Boyle’s law         (iii)         Hooks law                           (iv)         Graham’s law


5              The piot V versus I / P results in a

(i)           Parabota              (ii)          Hyperboia           (iii)         Straight line                       (iv)         Curve


6              The volume of a fixed mass of a gas directly proportional to the absolute temperature at constant pressure  this is statement of

(i)           Boyle’s law         (ii)          Charle’s law        (iii)         Avogadro’s law                                 (iv)         Dalton’s law


7              According to charle’s law the volume of a given mass of gas should be zero at

(i)           25° C                      (ii)          100°C                     (iii)         237° C                                    (iv)         -273° C


8              Which variable are interrelated in ideal gas equation ?

(i)           Volume                (ii)          Temperature     (iii)         Pressure                              (iv)         All of the above


9              Under standard condition of temperature and pressure, one mole of a gas occupies volume equal to.

(i)           2.24 dm3              (ii)          224 dm3               (iii)         22.4 dm3                              (iv)         22.4 cm


10.          In SI units the numerical value of R is equal to

(i)           8.314 JK-1 mol- 1                              (ii)          8.314 caI.K mot- 1

(iii)         8.314 JK1 moi-1                                 (iv)         None of these


11.          The escape of gas molecules one by one without collisions through a hole of molecular dimensions is called.

(i)           Effusion               (ii)          Diffusion             (iii)         Osmosis                               (iv)         None of these


12.          The rate of diffusion of two gases are inversely proportional to the square roots of their densities or molecular weights is a statement of

(i)           Charle’s law        (ii)          Boyle’s law         (iii)         Graham’s law                     (iv)         Dalton’s law


13.          The pressure of each gas in a mixture is called



(i)           Total pressure                                   (ii)          Vapor pressure

(iii)         Equilibrium pressure                     (iv)         Partial pressure

14.          The total pressure exerted by a mixture of gases is the sum of the partial pressure of all the gases present is a statement of

(i)           Charle’s law        (ii)          Boyle’s law         (iii)         Dalton’s law                       (iv)         Graham’s law


15.          1 mole of CO2 contains molecules

(i)           6 x 1024                 (ii)          6. 022 x 1023        (iii)         6. 022 x 1024                        (iv)         6.022 x 1025


16.          Real gases deviate from ideal behavior at.

(i)           Low pressure                    (ii)          High pressure

(iii)         High Temperature           (iv)         Low temperature and high pressure


17.          At the same temperature the molecules of every gas have the same average.

(i)           Potential energy                                              (ii)          Vibrational energy

(iii)         Rotational energy                                           (iv)


18.          Which gas diffuses more rapidly?

(i)           O2                          (ii)          S03                         (iii)         NH                                          (iv)         H2


19.          The ratio of diffusion of the H2 and O 2 is

(i)           1 : 8                        (ii)          4 : 1                        (iii)         1:4                                          (iv)         1 : 16


20.          STP means

(i)           128 K and 1 atm                (ii)          25o and 1 atm

(iii)         0 o C and 1 atm                 (iv)         25o C and 25 atm


21.          Gas molecules exert pressure on the walls of container because of

(i)           Attraction           (ii)          Repulsion           (iii)         Cohesion                             (iv)         Collision


22.          The air contains C02 upto

(i)                                           (ii)                                          (iii)                                                         (iv)


In Symbol general gas equation is written as

(i)           PV= n RT              (ii)          PR = n VT             (iii)         n RT                                       (iv)         None of these


23.          Which of the following exists in gaseous from?

(I)           03                           (ii)          HF                           (iii)         Ne                                          (iv)         All of the above


24.          Which of the following is used in Barometer?

(i)           Liquid NH3          (ii)          Cl2gas                   (iii)         Mercury                               (iv) Water


25.          373.15 K temperature is equal to

(i)           A0OC                     (ii)          200° C                    (iii)         1°C                                         (iv)         100°C


26.          The average kinetic energy of a molecule is given by

(i)           1/2mv2 (ii)          3/2mv2                  (iii)         5/2mv2                                  (iv)         1/2m2v2


27.          The average distance traveled by a molecule between two successive collision is called

(i)           Collision diameter                          (iii)         Mean free path

(ii)          Collision frequency                        (iv)         Free path


28.          The intermolecular attractive forces operative over very short distances in gases are

(i)           H- bonding                                         (ii)          Ionic bonding

(iii)         Van der wall’s forces                      (iv)         None of these


29.          All the gases can be covered into liquids and solid by

(i)           Cooling                                                                (ii)          Compression

(iii)         Sublimation                                       (iv)         Ionization


30.          During which process the particles come so close to each other that the empty spaces between them are reduced to minimum

(i )          Evaporation                                       (ii)          Condensation

(iii)         Sublimation                                       (iv)         ionization


31.          What factors affect the vapour pressure?

(i)           Temperature                                     (ii)          Nature of liquid

(iii) Inter molecular forces                          (iv)         All of the above


32.          The vapour pressure of a liquid independent of

(i)           Temperature                                     (ii)          Pressure

(iii)         Inter molecular forces                   (iv)         Amount of a liquid

33.          The temperature at which the vapour pressure of a liquid becomes equal to the atmospheric pressure is called.

(i)           Freezing point                                  (ii)          Boiling point

(iii)         Mixing point                                      (iv)         Critical temperature


34.          Latent heat of vaporization of water is

(i)           30 JK ml 1                                            (ii)          40 JK moi – 1

(iii)         40. 7 JK mol — 1                               (iv)         30.7 JK moi-1


35.          The amount of energy required fo expand the surface of a liquid by a unit araa Is called.

(i)           Viscosity                                             (ii)          Free energy

(iii)         Surface tension                                                (iv)         None of these


36.          Surface tension s measured in the units of

(i)           Nm                         (ii)          N-1 m-1                                  (iii)         Nm-1                      (iv)         Nm2


37.          Which of the following reduce the surface tension?

(i)           Catalysis              (ii)          Wetting agents                                 (iii)         Inhibitors            (iv)         Initiator


38.          Which liquid does not wet glass?

(i)           A water                (ii)          Mercury                               (iii)         Alcohol                                (iv)         Ether


39.          Capillary action is due to

(i)           Cohesion                                             (ii)          Adhesion

(iii)         Both cohesion and adhesion      (iv)         None of these

40.          The resistance of liquid to its flow is called

(i)           Surface tension                                                (ii)          Viscosity

(iii)         Refraction                                           (iv)         None of these


41.          Which substance has high viscosity?

(i)           Water                    (ii) Ether              (iii)         Benzene             (iv)         Honey


42.          Viscosity of liquid depends on

(i)           Molecular size                                  (ii)          Molecular shape

(iii)         H-bonding                                          (iv)         All of the above


43.          A substance showing variable intensity of a property in different direction is called

(i)           Allotropy            (ii)          Anisotropy         (iii)         Cleavage             (iv)         None of these


44.          The solid in which the particles have no regular arrangement and are randomly placed are called,

(i)           Crystalline solids                            (ii)          Amorphous solids

(iii)         Vitreous solids                                 (iv)         None of these


45.          Two substance that have the same crystal structure are said to be

(i)           isomorphous     (ii)          Anisotropic        (iii)         Isotropic              (iv)         Polymorphous


46.          A single substance that crystallizes in two or more different forms under different conditions is said to be

(i)           Isomorphous     (ii)          Polymorphous (iii)         Isotropic              (iv)         None of these


47.          The system in which ail the three axes are of equal length and at right angle to each other is called.

(i)          Hexagonal          (ii)          Trigonal                (iii)         Cubic                     (iv)         Rectangular


48.          The system in which all the three axes are unequal ad are at right angle to each other is called.

(i)           Cubic                     (ii)          Hexagonal          (iii)         Orthorhombic   (iv)         Tetragonal


49.          The system in which all the three axes and angles are unequal is called

(i)           Hexagonal          (ii)          Monoclinic         (iii)         Trigonal                (iv)         Triclinic


50,          The system in which two out of three axes are of equal

(i)           Cubic system                    (ii)          Hexagonal system

(iii)         Trigonal system                                (iv)         Tetragonal system


51.          The crystals which are formed by interaction between positively and negatively charged ions are known as

(i)           Metallic crystals               (ii)          Covalent crystal

(iii)         Ionic crystals                      (iv)         None of these


52           The amount of energy released when gaseous ions of opposite charges combine to give one mole of a crystalline ionic compound is called.

(i)           Bond energy                      (ii)          Heat of formation

(iii)         Lattice energy                   (iv)         Ionization energy


53           The shape of the common salt is

(i)           Monolic               (ii)          Triclinic                (iii)         Hexagonal          (iv)         Cubic


54.          Evaporation causes

(i)           Freezing              (ii)          Cooling                                (iii)         Heating                (iv)         Sublimation



55. Which liquid is more volatile?

(i)           Water                    (ii)          Mercury               (iii)         Benzene              (iv)         Honey


56.          A drop of water spreads on a bloting paper. This is due to

(i)           Surface tension                                (ii)          Capillary action

(iii)         Viscosity                             (iv)         Cohesion


57.          Which of the following molecules are symmetrical?

(i)           CH4        (ii)          S03         (iii)         C12         (iv)         All of these above


58.          Which of the following liquid has higher boiling point?

(i)           HCl         (ii)          HBr         (iii)         H2O        (iv)         Br3


59.          Surface tension is measured by

(i)           The torsion method                       (ii)          The capillary method

(iii)         The drop weight, method            (iv)         All of the above


60.          Graphite belongs to which system?

(i)           Hexagonal          (ii) Cubic              (iii)         Monoclinic                         (iv)         Tetragonal


61.          The ________ gas diffuses more rapidy:

(i)           Lighter                  (ii)          Heavier                                (iii)         Massive               (iv)         None of these


62.          6. 02 x 10 23 is called

(i)          Boltzman constant                          (ii)          Gas constant

(iii)         Avogardo’s number                        (iv)         None of these


63.          A set of postulates which explains the behavior of ideal gas is called:

(i)           Boltzman constant                                          (ii)          Boyle’s theory

(iii)         Kinetic molecular theory of gases           (iv)         None of these


64.          Solid ______________ is called dry ice

(i)           SO2                         (ii)          CO2                        (iii)         O2                           (iv)         None of these


65.          At S.T.P 44.8 litre of any gas weight is equal to:

(i)           3 mole                  (ii)          2 mole                  (iii)         1 mole                  (iv)         4 mole


66.          The process In which a gas is liquid directly on cooling Is called:

(i)           Condensation                   (ii)          Sublimation

(iii)         Freezing                              (iv)         Melting


67.          The atoms, molecules or ions in solids have ________________ – motion

(i)           Translational                      (ii)          Rotational

(iii)         Vibrational                         (iv)         None of these

68.          Diffusion in liquids is:

(i)           Faster than gases             (ii)          slower than gases

(iii)         Equal to gases                   (iv)         None of these


69.          Property in which recovery of shapes take place when deforming force is removed Is called:

(i)           Hardness             (ii)          Elasticity              (iii)         Cleavage             (iv)         None of these



70.          Kinetic theory based on the:

(i)           Structure of the particle of matter           (ii)          Bonding of the particle of matter

(iii)         Motion of the particle of matter                               (iv)         Size of the particle of matter


71.          The volume occupied one mole of any gas at S.T.P is called

(i)           Normal Volume                                (ii)          Molar volume

(iii)         Solid volume                     (iv)         Avogadro’s volume


72.          Sample of a gas contains 300 ml volume at 2i o and 1 atm pressure. Calculate the volume of the gas occupy at 32 o C temp and 5 atm pressure

(i)           110 ml                                   (ii)          50 ml

(iii)         61 ml                                     (iv)         65 mi


73.          T2 is the temperature which represents:

(i)           Solid melts
(ii)          Liquid boils
(iii)         Liquid condense
(iv)         Solid sublimes



74.          The viscosity of a liquid increase when:

(i)           Molecular size increase

(ii)          Molecular size decrease

(iii)         Viscosity does not depend on molecular size

(iv)         Some time increase and some time decrease


75.          Viscosity of a liquid is higher when:

(i)           Intermolecular forces between molecules are weak

(ii)          Intermolecular forces between molecules are strong.

(iii)         Size of the molecules are smaller

(iv)         All of these


76.          Which one of the following liquid has strong adhesive forces




77.          By the applying pressure on the crystal, solid crystal break into small crystals resembling the larger crystal along the plane this process is called as:

(i)           Breaking              (ii)          Polymorphism                  (iii)         Isomorphism     (iv)         Cleavage


78.          Which one of the following is Isomorphic Substance?

(i)          Diamond Graphite                          (ii)          Ca C03 + Na NO 3

(iii)         Ca CO 3 + Ni S04                                (iv)         All of these


79.          The diamond is:

(i)           Metallic crystal                                 (ii)          Molecular crystal

(ii            Covalent crystals                             (iv)         None of these


80.          A small building block which brings whole information about crystal structure is called:

(i)           Unit Cell                                               (ii)          Crystal lattice

(iii)         Crystal unit                                         (iv)         None of the above


81.          Trigonal and orthorhombic crystal of CaCO3 is known as:

(i)           Isomers                                (ii)          Isomorphous                     (iii)         Isotopes              (iv)         Polymorphous


82.          When any solid is changed to gas without melting the process is called:

(i)           Diffusion             (ii)          Boiling                                  (iii)         Sublimation       (iv)         Distiillation


83.          The process in which a solid is directly converted into gaseous state is called

(i)           Evaporation       (ii)          Melting                                                (iii)         Sublimation       (iv)         Distiillation Choices, and blog homework help flair dressups and decorations

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