question_answer 1)
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
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question_answer 2)
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
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question_answer 3)
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
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question_answer 4)
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
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question_answer 5)
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
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question_answer 6)
Which of the following graphs represent Boyle's law
A)
B)
C)
D)
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question_answer 7)
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
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question_answer 8)
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
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question_answer 9)
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
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question_answer 10)
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_answer 11)
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
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question_answer 12)
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
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question_answer 13)
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
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question_answer 14)
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
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question_answer 15)
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
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question_answer 16)
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_answer 17)
?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
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question_answer 18)
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_answer 19)
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_answer 20)
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_answer 21)
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_answer 22)
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_answer 23)
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_answer 24)
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_answer 25)
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
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question_answer 26)
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
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question_answer 27)
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_answer 28)
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_answer 29)
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_answer 30)
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_answer 31)
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_answer 32)
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_answer 33)
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_answer 34)
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_answer 35)
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_answer 36)
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_answer 37)
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_answer 38)
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_answer 39)
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_answer 40)
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_answer 41)
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_answer 42)
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_answer 43)
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_answer 44)
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_answer 45)
?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_answer 46)
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_answer 47)
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_answer 48)
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_answer 49)
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_answer 50)
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_answer 51)
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_answer 52)
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_answer 53)
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_answer 54)
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_answer 55)
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_answer 56)
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_answer 57)
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_answer 58)
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_answer 59)
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_answer 60)
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_answer 61)
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_answer 62)
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_answer 63)
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_answer 64)
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_answer 65)
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_answer 66)
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_answer 67)
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
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question_answer 68)
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
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question_answer 69)
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
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question_answer 70)
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
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question_answer 71)
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
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question_answer 72)
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
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question_answer 73)
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
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question_answer 74)
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
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question_answer 75)
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
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question_answer 76)
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
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question_answer 77)
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
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question_answer 78)
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
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question_answer 79)
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
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question_answer 80)
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
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question_answer 81)
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
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question_answer 82)
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
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question_answer 83)
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
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question_answer 84)
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
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question_answer 85)
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
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question_answer 86)
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
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question_answer 87)
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
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question_answer 88)
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
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question_answer 89)
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
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question_answer 90)
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
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question_answer 91)
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
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question_answer 92)
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
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question_answer 93)
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
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question_answer 94)
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
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question_answer 95)
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
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question_answer 96)
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
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question_answer 97)
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
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question_answer 98)
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
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question_answer 99)
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
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question_answer 100)
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
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question_answer 101)
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
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question_answer 102)
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
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question_answer 103)
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
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question_answer 104)
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
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question_answer 105)
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
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question_answer 106)
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
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