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)         Kinetic.energy

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

(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