JEE Main & Advanced Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव Question Bank

done Ideal gas equation and Related gas laws Total Questions - 106

• question_answer1)
  If P, V, T represent pressure, volume and temperature of the gas, the correct representation of Boyle's law is [BIT Ranchi 1988]
  A)
                  \[V\propto \frac{1}{T}\] (at constant P) done clear
  B)
                  \[PV=RT\] done clear
  C)
                  \[V\propto 1/P\] (at constant T)               done clear
  D)
                  \[PV=nRT\] done clear
  View Solution play_arrow

• question_answer2)
  At constant temperature, in a given mass of an ideal gas [CBSE PMT 1991]
  A)
                  The ratio of pressure and volume always remains constant done clear
  B)
                  Volume always remains constant done clear
  C)
                  Pressure always remains constant done clear
  D)
                  The product of pressure and volume always remains constant done clear
  View Solution play_arrow

• question_answer3)
  Air at sea level is dense. This is a practical application of [Kerala CEE 2000]
  A)
                  Boyle's law          done clear
  B)
                  Charle's law done clear
  C)
                  Avogadro's law done clear
  D)
                  Dalton's law done clear
  View Solution play_arrow

• question_answer4)
  If 20\[c{{m}^{3}}\] gas at 1 atm. is expanded to 50 \[c{{m}^{3}}\] at constant T, then what is the final pressure   [CPMT 1988]          
  A)
                  \[20\times \frac{1}{50}\]              done clear
  B)
                  \[50\times \frac{1}{20}\] done clear
  C)
                  \[1\times \frac{1}{20}\times 50\]              done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer5)
  Which of the following statement is false             [BHU 1994]             
  A)
                  The product of pressure and volume of fixed amount of a gas is independent of temperature done clear
  B)
                  Molecules of different gases have the same K.E. at a given temperature done clear
  C)
                  The gas equation is not valid at high pressure and low temperature done clear
  D)
                  The gas constant per molecule is known as Boltzmann constant done clear
  View Solution play_arrow

• question_answer6)
  Which of the following graphs represent Boyle's law
  A)
    done clear
  B)
    done clear
  C)
                      done clear
  D)
    done clear
  View Solution play_arrow

• question_answer7)
  Densities of two gases are in the ratio 1 : 2 and their temperatures are in the ratio 2 : 1, then the ratio of their respective pressures is        [BHU 2000]
  A)
                  1 : 1        done clear
  B)
                  1 : 2 done clear
  C)
                  2 : 1        done clear
  D)
                  4 : 1 done clear
  View Solution play_arrow

• question_answer8)
  At constant pressure, the volume of fixed mass of an ideal gas is directly proportional to               [EAMCET 1985]
  A)
                  Absolute temperature  done clear
  B)
                  Degree centigrade done clear
  C)
                  Degree Fahrenheit          done clear
  D)
                  None done clear
  View Solution play_arrow

• question_answer9)
  Which of the following expression at constant pressure represents Charle's law                [AFMC 1990]
  A)
                  \[V\propto \frac{1}{T}\]                done clear
  B)
                  \[V\propto \frac{1}{{{T}^{2}}}\] done clear
  C)
                  \[V\propto T\]  done clear
  D)
                  \[V\] done clear
  View Solution play_arrow

• question_answer10)
  Use of hot air balloons in sports and meteorological obsevations is an application of        [Kerala MEE 2002]
  A)
                  Boyle's law          done clear
  B)
                  Newtonic law done clear
  C)
                  Kelvin's law         done clear
  D)
                  Charle's law done clear
  View Solution play_arrow

• question_answer11)
  A 10 g of a gas at atmospheric pressure is cooled from \[{{273}^{o}}C\] to \[{{0}^{o}}C\] keeping the volume constant, its pressure would become
  A)
                  1/2 atm                done clear
  B)
                  1/273 atm done clear
  C)
                  2 atm    done clear
  D)
                  273 atm done clear
  View Solution play_arrow

• question_answer12)
  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 [CBSE PMT 1989]
  A)
                  \[{{0}^{o}}C\]    done clear
  B)
                  Its critical temperature done clear
  C)
                  Absolute zero    done clear
  D)
                  Its Boyle temperature done clear
  View Solution play_arrow

• question_answer13)
  A certain sample of gas has a volume of 0.2 litre measured at 1 atm. pressure and \[{{0}^{o}}C\]. At the same pressure but at \[{{273}^{o}}C\], its volume will be     [EAMCET 1992, 93; BHU 2005]
  A)
                  0.4 litres               done clear
  B)
                  0.8 litres done clear
  C)
                  27.8 litres             done clear
  D)
                  55.6 litres done clear
  View Solution play_arrow

• question_answer14)
  400 \[c{{m}^{3}}\] of oxygen at\[{{27}^{o}}C\]were cooled to \[-{{3}^{o}}C\] without change in pressure. The contraction in volume will be
  A)
                  40 \[c{{m}^{3}}\]              done clear
  B)
                  30 \[c{{m}^{3}}\] done clear
  C)
                  44.4 \[c{{m}^{3}}\]          done clear
  D)
                  360 \[c{{m}^{3}}\] done clear
  View Solution play_arrow

• question_answer15)
  The pressure p of a gas is plotted against its absolute temperature T for two different constant volumes, \[{{V}_{1}}\] and \[{{V}_{2}}\]. When \[{{V}_{1}}>{{V}_{2}}\], the
  A)
                  Curves have the same slope and do not intersect done clear
  B)
                  Curves must intersect at some point other than \[T=0\] done clear
  C)
                  Curve for \[{{V}_{2}}\] has a greater slope than that for\[{{V}_{1}}\] done clear
  D)
                  Curve for\[{{V}_{1}}\]has a greater slope than that for\[{{V}_{2}}\] done clear
  View Solution play_arrow

• question_answer16)
  Two closed vessels of equal volume containing air at pressure \[{{P}_{1}}\] and temperature \[{{T}_{1}}\] are connected to each other through a narrow tube. If the temperature in one of the vessels is now maintained at \[{{T}_{1}}\] and that in the other at \[{{T}_{2}}\], what will be the pressure in the vessels
  A)
                  \[\frac{2{{P}_{1}}{{T}_{1}}}{{{T}_{1}}+{{T}_{2}}}\]              done clear
  B)
                  \[\frac{{{T}_{1}}}{2{{P}_{1}}{{T}_{2}}}\] done clear
  C)
                  \[\frac{2{{P}_{1}}{{T}_{2}}}{{{T}_{1}}+{{T}_{2}}}\]              done clear
  D)
                  \[\frac{2{{p}_{1}}}{{{T}_{1}}+{{T}_{2}}}\] done clear
  View Solution play_arrow

• question_answer17)
  ?One gram molecule of a gas at N.T.P. occupies 22.4 litres.? This fact was derived from   [CPMT 1981, 1995]
  A)
                  Dalton's theory done clear
  B)
                  Avogadro's hypothesis done clear
  C)
                  Berzelius hypothesis done clear
  D)
                  Law of gaseous volume done clear
  View Solution play_arrow

• question_answer18)
  In a closed flask of 5 litres, 1.0 g of \[{{H}_{2}}\] is heated from 300 to 600 K. which statement is not correct [CBSE PMT 1991]
  A)
                  Pressure of the gas increases     done clear
  B)
                  The rate of collision increases     done clear
  C)
                  The number of moles of gas increases done clear
  D)
                  The energy of gaseous molecules increases done clear
  View Solution play_arrow

• question_answer19)
  Which one of the following statements is false [Manipal PMT 1991]
  A)
                  Avogadro number\[=6.02\times {{10}^{21}}\] done clear
  B)
                  The relationship between average velocity \[(\bar{v})\] and root mean square velocity (u) is \[\bar{v}=0.9213\,u\] done clear
  C)
                  The mean kinetic energy of an ideal gas is independent of the pressure of the gas done clear
  D)
                  The root mean square velocity of the gas can be calculated by the formula \[{{(3RT/M)}^{1/2}}\] done clear
  View Solution play_arrow

• question_answer20)
  The compressibility of a gas is less than unity at STP. Therefore [IIT 2000]
  A)
                  \[{{V}_{m}}>22.4\]litres                done clear
  B)
                  \[{{V}_{m}}<22.4\]litres done clear
  C)
                  \[{{V}_{m}}=22.4\]litres                done clear
  D)
                  \[{{V}_{m}}=44.8\]litres done clear
  View Solution play_arrow

• question_answer21)
  In the equation of sate of an ideal gas \[PV=nRT\], the value of the universal gas constant would depend only on [KCET 2005]
  A)
                  The nature of the gas done clear
  B)
                  The pressure of the gas done clear
  C)
                  The units of the measurement  done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer22)
  In the ideal gas equation, the gas constant R has the dimensions of         [NCERT 1982]
  A)
                  mole-atm K?1     done clear
  B)
                  litre mole done clear
  C)
                  litre-atm  K?1 mole?1        done clear
  D)
                  erg K?1 done clear
  View Solution play_arrow

• question_answer23)
  In the equation \[PV=nRT\], which one cannot be the numerical value of R          [BIT 1987]
  A)
                  \[8.31\times {{10}^{7}}erg\,{{K}^{-1}}mo{{l}^{-1}}\]                         done clear
  B)
                  \[8.31\times {{10}^{7}}dyne\,cm\,{{K}^{-1}}mo{{l}^{-1}}\]            done clear
  C)
                  \[8.31\,J{{K}^{-1}}mo{{l}^{-1}}\]                                done clear
  D)
                  \[8.31\,atm.\,{{K}^{-1}}mo{{l}^{-1}}\] done clear
  View Solution play_arrow

• question_answer24)
  Which one of the following indicates the value of the gas constant R       [EAMCET 1989]
  A)
                  1.987 cal K?1 mol?1            done clear
  B)
                  8.3 cal K?1 mol?1 done clear
  C)
                  0.0821 lit K?1 mol?1           done clear
  D)
                  1.987 Joules K?1 mol?1 done clear
  View Solution play_arrow

• question_answer25)
  The constant R is              [Orissa 1990]
  A)
                  Work done per molecule                              done clear
  B)
                  Work done per degree absolute done clear
  C)
                  Work done per degree per mole done clear
  D)
                  Work done per mole done clear
  View Solution play_arrow

• question_answer26)
  Select one correct statement. In the gas equation, \[PV=nRT\]  [CBSE PMT 1992]
  A)
                  n is the number of molecules of a gas done clear
  B)
                  V denotes volume of one mole of the gas done clear
  C)
                  n moles of the gas have a volume V done clear
  D)
                  P is the pressure of the gas when only one mole of gas is present done clear
  View Solution play_arrow

• question_answer27)
  The correct value of the gas constant R is close to [CBSE PMT 1992]
  A)
                  0.082 litre-atmopshere K                               done clear
  B)
                  0.082 litre-atmosphere \[{{K}^{-1}}\,mo{{l}^{-1}}\] done clear
  C)
                  0.082 litre-\[atmospher{{e}^{-1}}\,K\,mol{{e}^{-1}}\] done clear
  D)
                  0.082 \[litr{{e}^{-1}}\,atmospher{{e}^{-1}}\,K\,mol\] done clear
  View Solution play_arrow

• question_answer28)
  S.I. unit of gas constant R is         [CPMT 1994]
  A)
                  0.0821 litre atm K?1  mole?1           done clear
  B)
                  2 calories K?1 mole?1 done clear
  C)
                  8.31 joule K?1 mole?1 done clear
  D)
                  None done clear
  View Solution play_arrow

• question_answer29)
  Gas equation \[PV=nRT\] is obeyed by [BHU  2000]
  A)
                  Only isothermal process               done clear
  B)
                  Only adiabatic process done clear
  C)
                  Both A and B      done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer30)
  For an ideal gas number of moles per litre in terms of its pressure P, gas constant R and temperature T is [AIEEE 2002]
  A)
                  PT/R      done clear
  B)
                  PRT done clear
  C)
                  P/RT      done clear
  D)
                  RT/P done clear
  View Solution play_arrow

• question_answer31)
  If two moles of an ideal gas at 546 K occupy a volume of 44.8 litres, the pressure must be [NCERT 1981; JIPMER 1991]
  A)
                  2 atm    done clear
  B)
                  3 atm done clear
  C)
                  4 atm    done clear
  D)
                  1 atm done clear
  View Solution play_arrow

• question_answer32)
  How many moles of He gas occupy 22.4 litres at \[{{30}^{o}}C\] and one atmospheric pressure   [KCET 1992]
  A)
                  0.90        done clear
  B)
                  1.11 done clear
  C)
                  0.11        done clear
  D)
                  1.0 done clear
  View Solution play_arrow

• question_answer33)
  Volume of 0.5 mole of a gas at 1 atm. pressure and \[273K\] is [EAMCET 1992]
  A)
                  22.4 litres             done clear
  B)
                  11.2 litres done clear
  C)
                  44.8 litres             done clear
  D)
                  5.6 litres done clear
  View Solution play_arrow

• question_answer34)
  At \[{{0}^{o}}C\] and one atm pressure, a gas occupies 100 cc. If the pressure is increased to one and a half-time and temperature is increased by one-third of absolute temperature, then final volume of the gas will be [DCE 2000]
  A)
                  80 cc      done clear
  B)
                  88.9 cc done clear
  C)
                  66.7 cc   done clear
  D)
                  100 cc done clear
  View Solution play_arrow

• question_answer35)
  Correct gas equation is  [CBSE PMT 1989; CPMT 1991]
  A)
                  \[\frac{{{V}_{1}}{{T}_{2}}}{{{P}_{1}}}=\frac{{{V}_{2}}{{T}_{1}}}{{{P}_{2}}}\]           done clear
  B)
                  \[\frac{{{P}_{1}}{{V}_{1}}}{{{P}_{2}}{{V}_{2}}}=\frac{{{T}_{1}}}{{{T}_{2}}}\] done clear
  C)
                  \[\frac{{{P}_{1}}{{T}_{2}}}{{{V}_{1}}}=\frac{{{P}_{2}}{{V}_{2}}}{{{T}_{2}}}\]           done clear
  D)
                  \[\frac{{{V}_{1}}{{V}_{2}}}{{{T}_{1}}{{T}_{2}}}={{P}_{1}}{{P}_{2}}\] done clear
  View Solution play_arrow

• question_answer36)
  Two separate bulbs contain ideal gases A and B. The density of gas A is twice that of gas B. The molecular mass of A is half that of gas B. The two gases are at the same temperature. The ratio of the pressure of A to that of gas B is [BHU 1994]
  A)
                  2              done clear
  B)
                  1/2 done clear
  C)
                  4              done clear
  D)
                  ¼ done clear
  View Solution play_arrow

• question_answer37)
  16 g of oxygen and 3 g of hydrogen are mixed and kept at 760 mm pressure and \[{{0}^{o}}C\]. The total volume occupied by the mixture will be nearly      [Vellore CMC 1991]
  A)
                  22.4 litres             done clear
  B)
                  33.6 litres done clear
  C)
                  448 litres              done clear
  D)
                  44800 ml done clear
  View Solution play_arrow

• question_answer38)
  Pure hydrogen sulphide is stored in a tank of 100 litre capacity at \[{{20}^{o}}C\] and 2 atm pressure. The mass of the gas will be   [CPMT 1989]
  A)
                  34 g        done clear
  B)
                  340 g done clear
  C)
                  282.4 g  done clear
  D)
                  28.24 g done clear
  View Solution play_arrow

• question_answer39)
  At N.T.P. the volume of a gas is found to be 273 ml. What will be the volume of this gas at 600 mm Hg and \[{{273}^{o}}C\]                 [CPMT 1992]
  A)
                  391.8 mL              done clear
  B)
                  380 ml done clear
  C)
                  691.6 ml               done clear
  D)
                  750 ml done clear
  View Solution play_arrow

• question_answer40)
  One litre of a gas weighs 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 weigh one gram [CBSE PMT 1992]
  A)
                  450 K     done clear
  B)
                  600 K done clear
  C)
                  800 K     done clear
  D)
                  900 K done clear
  View Solution play_arrow

• question_answer41)
  A wheather balloon filled with hydrogen at 1 atm and \[{{27}^{o}}C\] has volume equal to 12000 litres. On ascending it reaches a place where the temperature is \[-{{23}^{o}}C\] and pressure is 0.5 atm. The volume of the balloon is [CBSE PMT 1991]
  A)
                  24000 litres          done clear
  B)
                  20000 litres done clear
  C)
                  10000 litres          done clear
  D)
                  12000 litres done clear
  View Solution play_arrow

• question_answer42)
  The density of a gas at \[{{27}^{o}}C\] and 1 atm is d. Pressure remaining constant at which of the following temperatures will its density become 0.75 d     [CBSE PMT 1992]
  A)
                  \[{{20}^{o}}C\]  done clear
  B)
                  \[{{30}^{o}}C\] done clear
  C)
                  400 K     done clear
  D)
                  300 K done clear
  View Solution play_arrow

• question_answer43)
  A sample of gas occupies 100 ml at \[{{27}^{o}}C\] and 740 mm pressure. When its volume is changed to 80 ml at 740 mm pressure, the temperature of the gas will be [Vellore CMC 1991]
  A)
                  \[{{21.6}^{o}}C\]              done clear
  B)
                  \[{{240}^{o}}C\] done clear
  C)
                  \[-{{33}^{o}}C\]                done clear
  D)
                  \[{{89.5}^{o}}C\] done clear
  View Solution play_arrow

• question_answer44)
  The total pressure exerted by a number of non-reacting gases is equal to the sum of the partial pressures of the gases under the same conditions is known as [CPMT 1986]
  A)
                  Boyle's law          done clear
  B)
                  Charle's law done clear
  C)
                  Avogadro's law done clear
  D)
                  Dalton's law done clear
  View Solution play_arrow

• question_answer45)
  ?Equal volumes of all gases at the same temperature and pressure contain equal number of particles.? This statement is a direct consequence of   [Kerala MEE 2002]
  A)
                  Avogadro?s law done clear
  B)
                  Charle's law done clear
  C)
                  Ideal gas equation           done clear
  D)
                  Law of partial pressure done clear
  View Solution play_arrow

• question_answer46)
  If three unreactive gases having partial pressures \[{{P}_{A}},\,{{P}_{B}}\] and \[{{P}_{C}}\] and their moles are 1, 2 and 3 respectively then their total pressure will be       [CPMT 1994]
  A)
                  \[P={{P}_{A}}+{{P}_{B}}+{{P}_{C}}\]        done clear
  B)
                  \[P=\frac{{{P}_{A}}+{{P}_{B}}+{{P}_{C}}}{6}\] done clear
  C)
                  \[P=\frac{\sqrt{{{P}_{A}}+{{P}_{B}}+{{P}_{C}}}}{3}\]        done clear
  D)
                  None done clear
  View Solution play_arrow

• question_answer47)
  Dalton's law of partial pressure will not apply to which of the following mixture of gases                [Bihar MADT 1981]
  A)
                  \[{{H}_{2}}\] and \[S{{O}_{2}}\] done clear
  B)
                  \[{{H}_{2}}\] and \[C{{l}_{2}}\] done clear
  C)
                  \[{{H}_{2}}\] and \[C{{O}_{2}}\] done clear
  D)
                  \[{{H}_{2}}\] and \[S{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer48)
  Which of the following mixtures of gases does not obey Dalton's law of partial pressure [CBSE PMT 1996: Kerala PMT 2000]
  A)
                  \[{{O}_{2}}\] and \[C{{O}_{2}}\]                done clear
  B)
                  \[{{N}_{2}}\] and \[{{O}_{2}}\] done clear
  C)
                  \[C{{l}_{2}}\] and \[{{O}_{2}}\]   done clear
  D)
                  \[N{{H}_{3}}\] and HCl done clear
  View Solution play_arrow

• question_answer49)
  To which of the following gaseous mixtures is Dalton's law not applicable
  A)
                  \[Ne+He+S{{O}_{2}}\]   done clear
  B)
                  \[N{{H}_{3}}+HCl+HBr\] done clear
  C)
                  \[{{O}_{2}}+{{N}_{2}}+C{{O}_{2}}\]          done clear
  D)
                  \[{{N}_{2}}+{{H}_{2}}+{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer50)
  Equal amounts of two gases of molecular weight 4 and 40 are mixed. The pressure of the mixture is 1.1 atm. The partial pressure of the light gas in this mixture is [CBSE PMT 1991]
  A)
                  0.55 atm              done clear
  B)
                  0.11 atm done clear
  C)
                  1 atm    done clear
  D)
                  0.12 atm done clear
  View Solution play_arrow

• question_answer51)
  Rate of  diffusion of a gas is         [IIT 1985; CPMT 1987]
  A)
                  Directly proportional to its density done clear
  B)
                  Directly proportional to its molecular mass done clear
  C)
                  Directly proportional to the square root of its molecular mass done clear
  D)
                  Inversely proportional to the square root of its molecular mass done clear
  View Solution play_arrow

• question_answer52)
  Which of the following gas will have highest rate of diffusion [Pb. CET Sample paper 1993; CPMT 1990]
  A)
                  \[N{{H}_{3}}\]   done clear
  B)
                  \[{{N}_{2}}\] done clear
  C)
                  \[C{{O}_{2}}\]    done clear
  D)
                  \[{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer53)
  Which of the following relationship is correct, where r is the rate of diffusion of a gas and d is its density                [CPMT 1994]
  A)
                  \[r\propto \sqrt{1/d}\]  done clear
  B)
                  \[r\propto \sqrt{d}\] done clear
  C)
                  \[r=d\]  done clear
  D)
                  \[r\propto d\] done clear
  View Solution play_arrow

• question_answer54)
  According to Grahman's law at a given temperature, the ratio of the rates of diffusion \[{{r}_{A}}/{{r}_{B}}\] of gases A and B is given by       [IIT 1998]
  A)
                  \[({{P}_{A}}/{{P}_{B}}){{({{M}_{A}}/{{M}_{B}})}^{1/2}}\] done clear
  B)
                  \[({{M}_{A}}/{{M}_{B}}){{({{P}_{A}}/{{P}_{B}})}^{1/2}}\] done clear
  C)
                  \[({{P}_{A}}/{{P}_{B}}){{({{M}_{B}}/{{M}_{A}})}^{1/2}}\] done clear
  D)
                  \[({{M}_{A}}/{{M}_{B}}){{({{P}_{B}}/{{P}_{A}})}^{1/2}}\] (where P and M are the pressures and molecular weights of gases A and B respectively) done clear
  View Solution play_arrow

• question_answer55)
  The ratio of the rate of diffusion of a given element to that of helium is 1.4. The molecular weight of the element is [Kerala PMT 1990]
  A)
                  2              done clear
  B)
                  4 done clear
  C)
                  8              done clear
  D)
                  16 done clear
  View Solution play_arrow

• question_answer56)
  A gas diffuse 1/5 times as fast as hydrogen. Its molecular weight is           [CPMT 1992; Bihar CEE 1982]
  A)
                  50           done clear
  B)
                  25 done clear
  C)
                  \[25\sqrt{2}\]    done clear
  D)
                  \[50\sqrt{2}\] done clear
  View Solution play_arrow

• question_answer57)
  The molecular weight of a gas which diffuses through a porous plug at 1/6th of the speed of hydrogen under identical conditions is       [EAMCET 1990]
  A)
                  27           done clear
  B)
                  72 done clear
  C)
                  36           done clear
  D)
                  48 done clear
  View Solution play_arrow

• question_answer58)
  Molecular weight of a gas that diffuses twice as rapidly as the gas with molecular weight 64 is     [EAMCET 1994]
  A)
                  16           done clear
  B)
                  8 done clear
  C)
                  64           done clear
  D)
                  6.4 done clear
  View Solution play_arrow

• question_answer59)
  The densities of hydrogen and oxygen are 0.09 and 1.44 g \[{{L}^{-1}}\]. If the rate of diffusion of hydrogen is 1 then that of oxygen in the same units will be [RPMT 1994]
  A)
                  4              done clear
  B)
                  ¼ done clear
  C)
                  16           done clear
  D)
                  1/16 done clear
  View Solution play_arrow

• question_answer60)
  If rate of diffusion of A is 5 times that of B, what will be the density ratio of A and B         [AFMC 1994]
  A)
                  1/25       done clear
  B)
                  1/5 done clear
  C)
                  25           done clear
  D)
                  4 done clear
  View Solution play_arrow

• question_answer61)
  The densities of two gases are in the ratio of 1 : 16. The ratio of their rates of diffusion is               [CPMT 1995]
  A)
                  16 : 1      done clear
  B)
                  4 : 1 done clear
  C)
                  1 : 4        done clear
  D)
                  1 : 16 done clear
  View Solution play_arrow

• question_answer62)
  At constant volume and temperature conditions, the rate of diffusion \[{{D}_{A}}\] and \[{{D}_{B}}\] of gases A and B having densities \[{{\rho }_{A}}\] and \[{{\rho }_{B}}\] are related by the expression      [IIT 1993]
  A)
                  \[{{D}_{A}}={{\left[ {{D}_{B}}\cdot \frac{{{\rho }_{A}}}{{{\rho }_{B}}} \right]}^{1/2}}\]     done clear
  B)
                  \[{{D}_{A}}={{\left[ {{D}_{B}}\cdot \frac{{{\rho }_{A}}}{{{\rho }_{B}}} \right]}^{1/2}}\] done clear
  C)
                  \[{{D}_{A}}={{D}_{B}}{{\left( \frac{{{\rho }_{A}}}{{{\rho }_{B}}} \right)}^{1/2}}\] done clear
  D)
                  \[{{D}_{A}}={{D}_{B}}{{\left( \frac{{{\rho }_{B}}}{{{\rho }_{A}}} \right)}^{1/2}}\] done clear
  View Solution play_arrow

• question_answer63)
  Atmolysis is a process of
  A)
                  Atomising gas molecules                              done clear
  B)
                  The breaking of atoms to sub-atomic particles done clear
  C)
                  Separation of gases from their gaseous mixture done clear
  D)
                  Changing of liquids to their vapour state done clear
  View Solution play_arrow

• question_answer64)
  A bottle of ammonia and a bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends, the white ammonium chloride ring first formed will be            [IIT 1988]
  A)
                  At the centre of the tube             done clear
  B)
                  Near the hydrogen chloride bottle done clear
  C)
                  Near the ammonia bottle             done clear
  D)
                  Throughout the length of the tube done clear
  View Solution play_arrow

• question_answer65)
  Which of the following pairs will diffuse at the same rate through a porous plug [EAMCET 1990]
  A)
                  CO, \[N{{O}_{2}}\]           done clear
  B)
                  \[N{{O}_{2}},\,C{{O}_{2}}\] done clear
  C)
                  \[N{{H}_{3}},\,P{{H}_{3}}\]          done clear
  D)
                  NO\[{{C}_{2}}{{H}_{6}}\] done clear
  View Solution play_arrow

• question_answer66)
  If 4 g of oxygen diffuse through a very narrow hole, how much hydrogen would have diffused under identical conditions                [CPMT 1971]
  A)
                  16 g        done clear
  B)
                  1 g done clear
  C)
                  1/4 g      done clear
  D)
                  64 g done clear
  View Solution play_arrow

• question_answer67)
  A gas diffuse at a rate which is twice that of another gas B. The ratio of molecular weights of A to B is      [EAMCET 1986]
  A)
                  1.0          done clear
  B)
                  0.75 done clear
  C)
                  0.50        done clear
  D)
                  0.25 done clear
  View Solution play_arrow

• question_answer68)
  Two grams of hydrogen diffuse from a container in 10 minutes. How many grams of oxygen would diffuse through the same container in the same time under similar conditions            [MNR 1980]
  A)
                  0.5 g      done clear
  B)
                  4 g done clear
  C)
                  6 g          done clear
  D)
                  8 g done clear
  View Solution play_arrow

• question_answer69)
  The rate of diffusion of methane at a given temperature is twice that of X. The molecular weight of X is                                 [MNR 1995; Kerala CEE 2001]
  A)
                  64.0        done clear
  B)
                  32.0 done clear
  C)
                  40.0        done clear
  D)
                  80.0 done clear
  View Solution play_arrow

• question_answer70)
  X ml of \[{{H}_{2}}\] gas effuses through a hole in a container in 5 seconds. The time taken for the effusion of the same volume of the gas specified below under identical condition is [IIT 1996]
  A)
                  10 seconds : He done clear
  B)
                  20 seconds : \[{{O}_{2}}\] done clear
  C)
                  25 seconds : CO done clear
  D)
                  55 seconds : \[C{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer71)
  At what temperature, the rate of effusion of \[{{N}_{2}}\] would be 1.625 times that of \[S{{O}_{2}}\] at \[{{50}^{o}}C\] [CBSE PMT 1996]
  A)
                  110 K     done clear
  B)
                  173 K done clear
  C)
                  373 K     done clear
  D)
                  273 K done clear
  View Solution play_arrow

• question_answer72)
  Given the reaction \[C(s)+{{H}_{2}}O(l)\to CO(g)+{{H}_{2}}(g)\] calculate the volume of the gases produced at STP from 48.0 g of carbon
  A)
                  179.2 L  done clear
  B)
                  89.6 L done clear
  C)
                  44.8 L     done clear
  D)
                  22.4 L done clear
  View Solution play_arrow

• question_answer73)
  4.4 g of a gas at STP occupies a volume of 2.24 L, the gas can be [Haryana CEET 2000]
  A)
                  \[{{O}_{2}}\]      done clear
  B)
                  CO done clear
  C)
                  \[N{{O}_{2}}\]   done clear
  D)
                  \[C{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer74)
  Under what conditions will a pure sample of an ideal gas not only exhibit a pressure of 1 atm but also a concentration of 1 mole \[litre-1\] \[(R=0.082\,litre\,atm\,mo{{l}^{-1}}\,{{\deg }^{-1}})\]    [CBSE PMT 1993]
  A)
                  At STP   done clear
  B)
                  When \[V=22.4\,litres\]                done clear
  C)
                  When \[T=12\,K\] done clear
  D)
                  Impossible under any conditions done clear
  View Solution play_arrow

• question_answer75)
  There are \[6.02\times {{10}^{22}}\] molecules each of \[{{N}_{2}},\,{{O}_{2}}\] and \[{{H}_{2}}\] which are mixed together at 760 mm and 273 K. The mass of the mixture in grams is             [Pb. PMT 1997]
  A)
                  6.2          done clear
  B)
                  4.12 done clear
  C)
                  3.09        done clear
  D)
                  7 done clear
  View Solution play_arrow

• question_answer76)
  Volume of 4.4 g of \[C{{O}_{2}}\] at NTP is           [Pb. CET 1997]
  A)
                  22.4 L     done clear
  B)
                  44.8 L done clear
  C)
                  2.24 L     done clear
  D)
                  4.48 L done clear
  View Solution play_arrow

• question_answer77)
  The energy of an ideal gas depends only on its
  A)
                  Pressure              done clear
  B)
                  Volume done clear
  C)
                  Number of moles            done clear
  D)
                  Temperature done clear
  View Solution play_arrow

• question_answer78)
  A bottle of cold drink contains 200 ml liquid in which \[C{{O}_{2}}\] is 0.1 molar. Suppose \[C{{O}_{2}}\] behaves like an ideal gas, the volume of the dissolved \[C{{O}_{2}}\] at STP is                [CBSE PMT 1991]
  A)
                  0.224 litre             done clear
  B)
                  0.448 litre done clear
  C)
                  22.4 litre               done clear
  D)
                  2.24 litre done clear
  View Solution play_arrow

• question_answer79)
  The vapour density of a gas is 11.2. The volume occupied by 11.2 g of this gas at N.T.P. is [MNR 1982; CBSE PMT 1991]
  A)
                  1 L done clear
  B)
                  11.2 L done clear
  C)
                  22.4 L     done clear
  D)
                  20 L done clear
  View Solution play_arrow

• question_answer80)
  A pre-weighed vessel was filled with oxygen at N.T.P. and weighted. It was then evacuated, filled with \[S{{O}_{2}}\] at the same temperature and pressure, and again weighted. The weight of oxygen will be        [NCERT 1989]
  A)
                  The same as that of \[S{{O}_{2}}\] done clear
  B)
                  \[\frac{1}{2}\]that of\[S{{O}_{2}}\] done clear
  C)
                  Twice that of\[S{{O}_{2}}\] done clear
  D)
                  One fourth that of\[S{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer81)
  Five grams each of the following gases at \[{{87}^{o}}C\] and 750 mm pressure are taken. Which of them will have the least volume [MNR 1991]
  A)
                  HF           done clear
  B)
                  HCl done clear
  C)
                  HBr         done clear
  D)
                  HI done clear
  View Solution play_arrow

• question_answer82)
  Who among the following scientists has not done any important work on gases                 [Bihar MADT 1980]
  A)
                  Boyle     done clear
  B)
                  Charles done clear
  C)
                  Avogadro            done clear
  D)
                  Faraday done clear
  View Solution play_arrow

• question_answer83)
  A closed vessel contains equal number of nitrogen and oxygen molecules at a pressure of P mm. If nitrogen is removed from the system then the pressure will be [MP PMT 1985]
  A)
                  P             done clear
  B)
                  2P done clear
  C)
                  \[P/2\]  done clear
  D)
                  \[{{P}^{2}}\] done clear
  View Solution play_arrow

• question_answer84)
  If the four tubes of a car are filled to the same pressure with \[{{N}_{2}},\,{{O}_{2}},\,{{H}_{2}}\] and Ne separately, then which one will be filled first              [Manipal PMT 2001]
  A)
                  \[{{N}_{2}}\]      done clear
  B)
                  \[{{O}_{2}}\] done clear
  C)
                  \[{{H}_{2}}\]       done clear
  D)
                  Ne done clear
  View Solution play_arrow

• question_answer85)
  Which of the following gas mixture is not applicable for Dalton?s law of partial pressure  [Pb. CET  2002]
  A)
                  \[S{{O}_{2}}\] and \[C{{l}_{2}}\]                done clear
  B)
                  \[C{{O}_{2}}\] and \[{{N}_{2}}\] done clear
  C)
                  \[CO\] and \[C{{O}_{2}}\]             done clear
  D)
                  \[CO\] and \[{{N}_{2}}\] done clear
  View Solution play_arrow

• question_answer86)
  At what pressure a quantity of gas will occupy a volume of \[60\,ml\], if it occupies a volume of \[100ml\] at a pressure of \[720mm\]? (while temperature is constant) :    [Pb. CET 2000]
  A)
                  \[700\,mm\]      done clear
  B)
                  \[800\,mm\] done clear
  C)
                  \[100\,mm\]      done clear
  D)
                  \[1200\,mm\] done clear
  View Solution play_arrow

• question_answer87)
  At constant temperature and pressure which gas will diffuse first \[{{H}_{2}}\] or \[{{O}_{2}}\]?                [Pb. CET  2000]
  A)
                  Hydrogen done clear
  B)
                  Oxygen done clear
  C)
                  Both will diffuse in same time done clear
  D)
                  None of the above done clear
  View Solution play_arrow

• question_answer88)
  When a jar containing gaseous mixture of equal volumes of \[C{{O}_{2}}\] and \[{{H}_{2}}\] is placed in a solution of sodium hydroxide, the solution level will              [Pb. CET 2001]
  A)
                  Rise        done clear
  B)
                  Fall done clear
  C)
                  Remain constant              done clear
  D)
                  Become zero done clear
  View Solution play_arrow

• question_answer89)
  At S.T.P. \[1g\,CaC{{O}_{3}}\] on decomposition gives \[C{{O}_{2}}\] [Pb. CET  2000]
  A)
                  22.4 litre               done clear
  B)
                  2.24 litre done clear
  C)
                  0.224 litre            done clear
  D)
                  11.2 litre done clear
  View Solution play_arrow

• question_answer90)
  At NTP, the density of a gas, whose molecular weight is 45 is [Pb. CET 2001, 03]
  A)
                  44.8 gm/litre      done clear
  B)
                  11.4 gm/litre done clear
  C)
                  2 gm/ litre           done clear
  D)
                  3 gm/litre done clear
  View Solution play_arrow

• question_answer91)
  What is the ratio of diffusion rate of oxygen and hydrogen [Pb. CET  2003]
  A)
                  1 : 4        done clear
  B)
                  4 : 1 done clear
  C)
                  1 : 8        done clear
  D)
                  8 : 1 done clear
  View Solution play_arrow

• question_answer92)
  The maximum number of molecules is present in [CBSE PMT 2004]
  A)
                  0.5 g of \[{{H}_{2}}\] gas               done clear
  B)
                  10 g of \[{{O}_{2}}\] gas done clear
  C)
                  15 L of \[{{H}_{2}}\] gas at STP    done clear
  D)
                  5 L of \[{{N}_{2}}\] gas at STP done clear
  View Solution play_arrow

• question_answer93)
  One litre oxygen gas at STP will weigh    [Pb. CET  2004]
  A)
                  1.43 g    done clear
  B)
                  2.24 g done clear
  C)
                  11.2 g    done clear
  D)
                  22.4 g done clear
  View Solution play_arrow

• question_answer94)
  How will you separate mixture of two gases        [AFMC 2004]
  A)
                  Fractional distillation technique done clear
  B)
                  Grahams law of diffusion technique done clear
  C)
                  Osmosis done clear
  D)
                  Chromatography done clear
  View Solution play_arrow

• question_answer95)
  The rate of diffusion of hydrogen gas is [MH CET 2003; Pb. CET 2000]
  A)
                  1.4 times to \[He\] gas   done clear
  B)
                  Same as \[He\] gas done clear
  C)
                  5 times to \[He\] gas      done clear
  D)
                  2 times to \[He\] gas done clear
  View Solution play_arrow

• question_answer96)
  Hydrogen diffuses six times faster than gas \[A\]. The molar mass of gas \[A\] is               [KCET  2004]
  A)
                  72           done clear
  B)
                  6 done clear
  C)
                  24           done clear
  D)
                  36 done clear
  View Solution play_arrow

• question_answer97)
  At what pressure will a quantity of gas, which occupies \[100\,ml\] at a pressue of \[720\,mm\], occupy a volume of \[84\,ml\]            [DPMT  2004]
  A)
                  736.18 mm          done clear
  B)
                  820.20 mm done clear
  C)
                  784.15 mm          done clear
  D)
                  857.14 mm done clear
  View Solution play_arrow

• question_answer98)
  Containers \[A\] and \[B\] have same gases. Pressure, volume and temperature of \[A\] are all twice that of \[B,\] then the ratio of number of molecules of \[A\] and \[B\] are                 [AFMC 2004]
  A)
                  1 : 2        done clear
  B)
                  2 done clear
  C)
                  1 : 4        done clear
  D)
                  4 done clear
  View Solution play_arrow

• question_answer99)
  A mixture of \[N{{O}_{2}}\] and \[{{N}_{2}}{{O}_{4}}\] has a vapour density of 38.3 at \[300K\]. What is the number of moles of \[N{{O}_{2}}\] in \[100g\] of the mixture            [Kerala PMT 2004]
  A)
                  0.043     done clear
  B)
                  4.4 done clear
  C)
                  3.4          done clear
  D)
                  3.86 done clear
  E)
                  0.437 done clear
  View Solution play_arrow

• question_answer100)
  A cylinder of 5 litres capacity, filled with air at NTP is connected with another evacuated cylinder of 30 litres of capacity. The resultant air pressure in both the cylinders will be            [BHU 2004]
  A)
                  10.8 cm of Hg     done clear
  B)
                  14.9cm of Hg done clear
  C)
                  21.8 cm of Hg     done clear
  D)
                  38.8 cm of Hg done clear
  View Solution play_arrow

• question_answer101)
  A certain mass of gas occupies a volume of 300 c.c. at 27C and 620 mm pressure. The volume of this gas at \[{{47}^{o}}C\] and 640 mm pressure will be      [MH CET 2003]
  A)
                  400 c.c. done clear
  B)
                  510 c.c. done clear
  C)
                  310 c.c. done clear
  D)
                  350 c.c. done clear
  View Solution play_arrow

• question_answer102)
  What will be the volume of the mixture after the reaction?                         \[\underset{\text{4 litre}}{\mathop{N{{H}_{3}}}}\,+\underset{\text{1}\text{.5 litre}}{\mathop{HCl}}\,\to \underset{\text{(solid)}}{\mathop{N{{H}_{4}}Cl}}\,\]                    [BVP 2004]
  A)
                  0.5 litre done clear
  B)
                  1 litre done clear
  C)
                  2.5 litre done clear
  D)
                  0.1 litre done clear
  View Solution play_arrow

• question_answer103)
  The pressure and temperature of \[4d{{m}^{3}}\] of carbon dioxide gas are doubled. Then the volume of carbon dioxide gas would be     [KCET 2004]
  A)
                  \[2\,d{{m}^{3}}\]             done clear
  B)
                  \[3d{{m}^{3}}\] done clear
  C)
                  \[4\,d{{m}^{3}}\]             done clear
  D)
                  \[8\,d{{m}^{3}}\] done clear
  View Solution play_arrow

• question_answer104)
  If the absolute temperature of an ideal gas become double and pressure become half, the volume of gas would be [Kerala CET 2005]
  A)
                  Remain unchange            done clear
  B)
                  Will be double done clear
  C)
                  Will be four time              done clear
  D)
                  will be half done clear
  E)
                  Will be one fourth done clear
  View Solution play_arrow

• question_answer105)
  At what temperature, the sample of neon gas would be heated to double of its pressure, if the initial volume of gas is/are reduced to 15% at \[{{75}^{o}}C\]            [Kerala CET 2005]
  A)
                  \[{{319}^{o}}C\]                done clear
  B)
                  \[{{592}^{o}}C\] done clear
  C)
                  \[{{128}^{o}}C\]                done clear
  D)
                  \[{{60}^{o}}C\] done clear
  E)
                  \[{{90}^{o}}C\] done clear
  View Solution play_arrow

• question_answer106)
  Equation of Boyle's law is             [DPMT 2005]
  A)
                  \[\frac{dP}{p}=-\frac{dV}{V}\]   done clear
  B)
                  \[\frac{dP}{P}=+\frac{dV}{V}\] done clear
  C)
                  \[\frac{{{d}^{2}}P}{P}=-\frac{dV}{dT}\]  done clear
  D)
                  \[\frac{{{d}^{2}}P}{P}=+\frac{{{d}^{2}}V}{dT}\] done clear
  View Solution play_arrow