Practice Test


1) _______ proposed the absolute scale of temperature.


2) The inner central core of earth is in ________ state.


3) ______ have definite volume but no definite shape


4) Liquids diffuse slowly as compared to gases because


5) In general, matter exists in three states: solid, liquid and


6) ______ have definite volume and definite shape.


7) _______ are highly compressible.


8) _______ energy increases the tendency of molecules to escape from the attractive forces of neighbouring molecules.


9) Liquid and solid states are the result of


10) ______ melting point indicates strong intermolecular force of attraction.


11) Non-polar molecules possess_______ dipole moment.


12) _______ depends on the polarizability of the atom.


13) The strength of dispersion forces does not increase with increase in


14) While studying intermolecular interactions, it is assumed that


15) Dipole-dipole interaction is present between


16) The force of attraction between an ion and a polar molecule is called


17) Which of the following forces operates between two atoms?


18) As the temperature increases, kinetic energy of molecules


19) ______ interaction takes place between a polar molecule having permanent dipole moment and nonpolar molecule with zero dipole moment.


20) The non-zero dipole moment of a nonpolar molecule at an instant is called its


21) Dispersion forces are present in


22) Dipole moment is defined as the product of charge and the


23) Which of the following forces is present in HF?


24) In case of inert gases, the boiling points increase with_____ in atomic mass.


25) Hydrogen bonding is a special type of _______ interaction


26) Rate of diffusion = Volume of gas diffused / ________


27) Which of the following pressure conversion factors is correct?


28) The rate of diffusion of a gas depends on


29) The dimension of pressure are same as that of


30) The process of inter mixing of two or more gases is called


31) Atmospheric pressure is measured by_______


32) The volume of the gas is the volume of the


33) Lighter gases diffuse ________ heavier gases.


34) Boyle's law is applicable when _______is/are constant.


35) According to Boyle's law, at constant temperature, pressure of gas is directly proportional to its


36) According to Boyle's law, graph of PV vs P is


37) Boyle's law can be mathematically stated as


38) Absolute zero is that temrperature where the volume of the gas must be theoretically


39) The SI unit of temperature is


40) Which property is kept constant in verification of Charle's law?


41) The graph of pressure vs temperature according to Gay Lussac's law is


42) ________ collected air samples and made several observations on variation of pressure of gas with temperature.


43) Select one correct statement relating to the ideal gas equation, PV = nRT.


44) If the volume of 2 moles of an ideal gas at 540 K is 44.8 liter then its pressure will be


45) Value of universal gas constant 'R' depends upon


46) For an ideal gas, number of moles per liter in terms of its pressure p, gas constant R and temperature T is


47) For an ideal gas, it is assumed that


48) ________ gas is easy to liquefy due to strong intermolecular forces of attraction


49) In case of hydrogen, molar volume at STP is ________22.414 L.


50) Van der Waal's equation explains the behaviour of


51) The temperature at which real gases obey the ideal gas laws over a wide range of pressure is called


52) The compressibility factor of an ideal gas is


53) The Ven der Waal's equation reduces itself to the ideal gas equation at


54) Oxygen cannot be easily liquefied due to


55) At lower temperature, it is possible to liquefy gases at pressure lower than


56) In Linde process, cooling takes place by


57) ________ modified Linde process such that the cooling becomes more efficient


58) When the vacant space between the molecules of a gas is reduced to almost zero by applying pressure and by reducing temperature, gases turn into


59) Compared to gaseous state molecules, liquid molecules are held together by intermolecular forces of attraction.


60) Different liquids flow with different speeds due to


61) Liquids with low boiling points are called_____ liquids.


62) Liquids which are less volatile have________ forces of attraction.


63) At high altitudes, the boiling point of water gets lowered because


64) Vapour pressure is the pressure exerted by


65) Vapour pressure depends on


66) The temperature at which vapour pressure of a liquid is equal to atmospheric pressure is called


67) Evaporation takes place________ the liquid.


68) The pressure exerted by the vapours of liquid on the surface of liquid when there is no equilibrium between the liquid and its vapour is called


69) _______ is the force acting per unit length perpendicular to the line drawn on the surface of liquid.


70) The falling liquid drop is spherical due to


71) As temperature increases, surface tension


72) Which of the following is an application of surface tension?


73) Surface tension is a characteristic property of


74) Liquids rise or sink in capillaries due to


75) ________ increases viscosity of liquids


76) The earth's crust is in ________ state.


77) The freezing point of solid and boiling point of liquid are a measure of


78) _______ gas obeys Boyles and charles law only under limited conditions of low pressure and high temperature.


79) During evaporation of liquid.


80) The internal resistance to the flow of the liquid is called its


81) According to_______ law the pressure of a given mass of a gas inversely proportional to its volume at a constant temperature.


82) Avogadro proposed his hypothesis after studying


83) " I g-molecule of a gas at N.T.P. occupies a volume of 22.4 L.'' This fact was arrived by using


84) Dipole moment is measured in the unit of


85) Which of the following has the strongest hydrogen bonding?


86) which of the following has strong intermolecular hydrogen bonding?


87) The SI unit of pressure is


88) If P, V, T represent pressure, volume and temperature of the gas, the correct representation of Boyle's law is


89) For a given mass of a gas at constant temperature, if the volume V becomes three times, then the pressure (p) will become


90) At constant temperature, the pressure of V ml of a dry gas was increased from 1 atm to 2 atm. The new Volume will be_______


91) The volume occupied by 1 mole of a gas when pressure is 1 atm and temperature is 273K is


92) The compressibility of a gas is less than unity at S.T.P Therefore,molar volume


93) The compressibility factor, Z=


94) Which of the following gases can be liquefied?


95) The unit of viscosity coefficient is


96) The boiling point of _________ is low due to absence of hydrogen bonding.


97) SI unit of pressure is _______


98) Mathematical statement of Charles' law is


99) Thomas Andrew measured variation of the volume with pressure of _______ at different constant temperatures.


100) Mathematical statement of Gay Lussac law is


101) Mathematical statement of Avogadro's law is


102) Correct value of gas constant "R" is


103) For n moles of ideal gas,the equation may be written as


104) In the equation PV = nRT, which of the following value cannot be equal to R?


105) The density of Neon will be highest at