Practice Test

Q1) _______ proposed the absolute scale of temperature. Show Answer

Q2) The inner central core of earth is in ________ state. Show Answer

Q3) ______ have definite volume but no definite shape Show Answer

Q4) Liquids diffuse slowly as compared to gases because Show Answer

Q5) In general, matter exists in three states: solid, liquid and Show Answer

Q6) ______ have definite volume and definite shape. Show Answer

Q7) _______ are highly compressible. Show Answer

Q8) _______ energy increases the tendency of molecules to escape from the attractive forces of neighbouring molecules. Show Answer

Q9) Liquid and solid states are the result of Show Answer

Q10) ______ melting point indicates strong intermolecular force of attraction. Show Answer

Q11) Non-polar molecules possess_______ dipole moment. Show Answer

Q12) _______ depends on the polarizability of the atom. Show Answer

Q13) The strength of dispersion forces does not increase with increase in Show Answer

Q14) While studying intermolecular interactions, it is assumed that Show Answer

Q15) Dipole-dipole interaction is present between Show Answer

Q16) The force of attraction between an ion and a polar molecule is called Show Answer

Q17) Which of the following forces operates between two atoms? Show Answer

Q18) As the temperature increases, kinetic energy of molecules Show Answer

Q19) ______ interaction takes place between a polar molecule having permanent dipole moment and nonpolar molecule with zero dipole moment. Show Answer

Q20) The non-zero dipole moment of a nonpolar molecule at an instant is called its Show Answer

Q21) Dispersion forces are present in Show Answer

Q22) Dipole moment is defined as the product of charge and the Show Answer

Q23) Which of the following forces is present in HF? Show Answer

Q24) Hydrogen bonding is a special type of _______ interaction Show Answer

Q25) Rate of diffusion = Volume of gas diffused / ________ Show Answer

Q26) Which of the following pressure conversion factors is correct? Show Answer

Q27) The rate of diffusion of a gas depends on Show Answer

Q28) The dimension of pressure are same as that of Show Answer

Q29) The process of inter mixing of two or more gases is called Show Answer

Q30) Atmospheric pressure is measured by_______ Show Answer

Q31) The volume of the gas is the volume of the Show Answer

Q32) Lighter gases diffuse ________ heavier gases. Show Answer

Q33) Boyle's law is applicable when _______is/are constant. Show Answer

Q34) According to Boyle's law, at constant temperature, pressure of gas is directly proportional to its Show Answer

Q35) According to Boyle's law, graph of PV vs P is Show Answer

Q36) Boyle's law can be mathematically stated as Show Answer

Q37) Absolute zero is that temrperature where the volume of the gas must be theoretically Show Answer

Q38) The SI unit of temperature is Show Answer

Q39) Which property is kept constant in verification of Charle's law? Show Answer

Q40) The graph of pressure vs temperature according to Gay Lussac's law is Show Answer

Q41) 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 Show Answer

Q42) Liquids with low boiling points are called_____ liquids. Show Answer

Q43) At high altitudes, the boiling point of water gets lowered because Show Answer

Q44) Vapour pressure is the pressure exerted by Show Answer

Q45) Vapour pressure depends on Show Answer

Q46) The temperature at which vapour pressure of a liquid is equal to atmospheric pressure is called Show Answer

Q47) Evaporation takes place________ the liquid. Show Answer

Q48) 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 Show Answer

Q49) _______ is the force acting per unit length perpendicular to the line drawn on the surface of liquid. Show Answer

Q50) The falling liquid drop is spherical due to Show Answer

Q51) As temperature increases, surface tension Show Answer

Q52) Which of the following is an application of surface tension? Show Answer

Q53) Surface tension is a characteristic property of Show Answer

Q54) Liquids rise or sink in capillaries due to Show Answer

Q55) ________ increases viscosity of liquids Show Answer

Q56) The earth's crust is in ________ state. Show Answer

Q57) The freezing point of solid and boiling point of liquid are a measure of Show Answer

Q58) _______ gas obeys Boyles and charles law only under limited conditions of low pressure and high temperature. Show Answer

Q59) During evaporation of liquid. Show Answer

Q60) The internal resistance to the flow of the liquid is called its Show Answer

Q61) According to_______ law the pressure of a given mass of a gas inversely proportional to its volume at a constant temperature.
Show Answer

Q62) Avogadro proposed his hypothesis after studying
Show Answer

Q63) " I g-molecule of a gas at N.T.P. occupies a volume of 22.4 L.'' This fact was arrived by using
Show Answer

Q64) Dipole moment is measured in the unit of Show Answer

Q65) Which of the following has the strongest hydrogen bonding? Show Answer

Q66) which of the following has strong intermolecular hydrogen bonding? Show Answer

Q67) The SI unit of pressure is Show Answer

Q68) For a given mass of a gas at constant temperature, if the volume V becomes three times, then the pressure (p) will become Show Answer

Q69) 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_______ Show Answer

Q70) The volume occupied by 1 mole of a gas when pressure is 1 atm and temperature is 273K is Show Answer

Q71) The compressibility of a gas is less than unity at S.T.P Therefore,molar volume Show Answer

Q72) The compressibility factor, Z= Show Answer

Q73) Which of the following gases can be liquefied? Show Answer

Q74) The unit of viscosity coefficient is Show Answer

Q75) The boiling point of _________ is low due to absence of hydrogen bonding. Show Answer

Q76) SI unit of pressure is _______ Show Answer

Q77) Mathematical statement of Charles' law is Show Answer

Q78) Thomas Andrew measured variation of the volume with pressure of _______ at different constant temperatures. Show Answer

Q79) Mathematical statement of Gay Lussac law is Show Answer

Q80) Mathematical statement of Avogadro's law is Show Answer

Q81) Correct value of gas constant "R" is Show Answer

Q82) For n moles of ideal gas,the equation may be written as Show Answer

Q83) In the equation PV = nRT, which of the following value cannot be equal to R? Show Answer

Q84) The density of Neon will be highest at Show Answer

Q85) Kinetic energy of molecules in highest in Show Answer

Q86) Which is distilled first ? Show Answer

Q87) At ordinary temperature and pressure among halogens, chlorine is a gas, bromine is a liquid and iodine is a solid. This is because Show Answer

Q88) Which factor is most responsible for the increase in boiling points of noble gases from He to Xe ? Show Answer

Q89) Which of the following exhibits the weakest intermolecular forces ? Show Answer

Q90) Dimensions of pressure are the same as that of : Show Answer

Q91) Which of the following is true about gaseous state ? Show Answer

Q92) The temperature at which Celsius and Fahrenheit scales give the same reading is Show Answer

Q93) Aqueous tension of water (pressure exerted by the water vapours) depends upon Show Answer

Q94) Dalton's law of partial pressure will not hold good for which of the following ? Show Answer

Q95) The rate of diffusion of a gas is proportional to Show Answer

Q96) Which of the following gas will have highest rate of diffusion ? Show Answer

Q97) Which of the following statement is false ? Show Answer

Q98) Graph between P and V at constant temperature is Show Answer

Q99) In order to increase the volume of a gas by 10%, the pressure of the gas should be Show Answer

Q100) Which of the following shows explicitly the relationship between Boyle's law and Charles's law ? Show Answer

Q101) If the absolute temperature of gas is doubled and the pressure is reduced to one-half, the volume of the gas will Show Answer

Q102) There is 10 litre of a gas at STP. Which of the following new conditions keep the volume constant ? Show Answer

Q103) One litre of a gas weights 2 g at 300 K and 1 atm pressure. If the pressure is made 0.75 atm, at which of the following temperatures will one litre of the same gas weight one gram ? Show Answer

Q104) Pressure remaining the same, the volume of a given mass of an ideal gas increases for every degree centigrade rise in temperature by definite fraction of its volume at Show Answer

Q105) At constant temperature, for a given mass of an ideal gas Show Answer

Q106) If P, V, T represent pressure, volume and temperature of the gas, the correct representation of Boyle's law is Show Answer

Q107) At constant pressure, the volume of fixed mass of an ideal gas is directly proportional to Show Answer

Q108) Which of the following expression at constant pressure represents Charles's law Show Answer

Q109) One gram molecule of a gas at NTP occupies 22.4 litres. This fact was derived from Show Answer

Q110) 4.4 g of a gas at STP occupies a volume of 2.24 L, the gas can be Show Answer

Q111) The gas constant R is a constant Show Answer

Q112) Real gases show deviations from ideal behaviour when Show Answer

Q113) At lower temperatures, all gases show Show Answer

Q114) Any gas shows maximum deviation from ideal gas at Show Answer

Q115) Van der Waal's equation of state is obeyed by real gases. For n moles of a real gas, the expression will be Show Answer

Q116) To raise the volume of a gas by four times, the following methods may be adopted. Which of the methods is wrong ? Show Answer

Q117) Containers A and B have same gases. Pressure, volume and temperature of A are all twice as that B, then the ratio of number of molecules A and B are Show Answer

Q118) In the equation of state of an ideal gas PV = nRT, the value of the universal gas constant would depend only on Show Answer

Q119) S. I. unit of gas constant R is Show Answer

Q120) One litre of gas weighs 2 g at 300 K and 1 atm pressure, the pressure is made 0.75 atm, at which of the following temperatures will one litre of the same gas weigh one gram Show Answer

Q121) At which one of the following temperature and pressure conditions, the deviation of a gas from ideal behaviour is expected to be minimum ? Show Answer

Q122) When a compressed gas is allowed to expand through a porous plug at temperature above its inversion temperature, there is Show Answer

Q123) The Joule Thomson coefficient is zero at Show Answer

Q124) At the critical temperature Show Answer

Q125) A gas is liquidified Show Answer

Q126) Dominance of strong repulsive forces among the molecules of the gas (Z = compressibility factor) Show Answer

Q127) The temperature at which real gases obey the ideal gas laws over a wide range of pressure is called Show Answer

Q128) The deviation from ideal behaviour of a gas can be expressed as Show Answer

Q129) Which set of conditions represents easiest way to liquefy a gas ? Show Answer

Q130) Liquefaction of gases is based on the principle of Show Answer

Q131) When a gas is compressed at constant temperature, Show Answer

Q132) According to the kinetic theory of gases, the root mean square velocity is directly proportional to Show Answer

Q133) Which one of the following relationship is correct ? Show Answer

Q134) Which of the following is correct relation for root mean square velocity ? Show Answer

Q135) Which of the following is valid at absolute zero ? Show Answer

Q136) Root mean square velocity of a gas molecule is proportional to Show Answer

Q137) The root mean square velocity of an ideal gas at constant pressure varies with density (d) as Show Answer

Q138) The correct statement regarding liquid state is Show Answer

Q139) Which one of the following is not correct about boiling and evaporation ? Show Answer

Q140) At higher altitude, the boiling point of water lowers because Show Answer

Q141) Pressure cooker reduces cooking time because Show Answer

Q142) With the increasing molecular weight of a liquid, the viscosity Show Answer

Q143) Which of the following statements is correct if the intermolecular forces in liquids A, B and C are in the order A < B < C ? Show Answer

Q144) The internal resistance to flow in liquid is called Show Answer

Q145) With rise in temperature, viscosity of a liquid Show Answer

Q146) The vapour density of a gas is 11.2. The volume occupied by 11.2 of this gas at N.T.P. is Show Answer

Q147) With increase in temperature, the difference between rms velocity and average velocity will Show Answer

Q148) The average K. E. of an ideal gas is calories per mole is approximately equal to Show Answer

Q149) Which one of the following is not correct about liquids? Show Answer

Q150) Two flasks X and Y have capacity 1 L and 2 L respectively and each of them contains 1 mole of a gas. The temperatures of the flasks are so adjusted that average speed of molecules in X is twice as those in Y. The pressure in flask X would be Show Answer

Q151) To raise the volume of a gas by four times, the following methods may be adopted. Which of the method is wrong ? Show Answer

Q152) How much should the pressure be increased in order to decrease the volume of a gas by 5% at a constant temperature ? Show Answer

Q153) In what ratio by mass carbon monoxide and nitrogen should be mixed so that partial pressure exerted by each gas is same ? Show Answer

Q154) "Equal volumes of all gases at the same temperature and pressure contain equal number of particles." This statement is a direct consequence of Show Answer

Q155) Equal volumes of two gases which do not react together are enclosed in separate vessels. Their pressures are 100 mm and 400 mm respectively. If the two vessels are joined together, then what will be the pressure of the resulting mixture (temperature remaining constant) ? Show Answer

Q156) The molecular weight of a gas which diffuses through a porous plug at 1/6th of the speed of hydrogen under identical condition is Show Answer

Q157) One litre of a gas collected at N.T.P. will occupy ___ at 4 atmosphere and 310 K. Show Answer

Q158) A flask containing methane gas was weighed at a measured temperature and pressure. The flask was emptied and then filled with oxygen at the same temperature and pressure. The weight of methane vapour will be about Show Answer

Q159) A gas cylinder can withstand a pressure of 15 atm. The pressure gauge of a cylinder indicates a pressure of 12 atm. at 300 K. Due to fire in the surroundings the temperature at which the cylinder shall explode is Show Answer

Q160) Ideal gas equation is also called equation of states because Show Answer