*/*_An ideal gas can be liquified, because?

It gets solidified directly without becoming liquid

Its molecular size is very small

Its critical temperature is more than 0¬¨‚àûC

Forces operative between its molecules are negligible

It gets solidified directly without becoming liquid

*/*_A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal?

Intermolecular forces of attraction

*/*_In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the?

Absolute humidity at a given temperature

*/*_Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ≈í√ÆH = heat of mixing, and ≈í√ÆV = volume change on mixing ) ??

≈í√ÆH = 1 (+ ve)and ≈í√Æ V = -ve

*/*_Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules?

Do work equal to loss in kinetic energy

Do not lose energy on collision

Are above the inversion temperature

Do not exert attractive force on each other

Do work equal to loss in kinetic energy

_ No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules$?

Exert no attractive force on each other

Do work equal to loss in kinetic energy

Are above the inversion temperature

Exert no attractive force on each other

_ The depression in freezing point of a solution is$?

Inversely proportional to the mass of solvent

Directly proportional to the mole of solute

_ Pick out the wrong unit conversion of thermal conductivity.$?

1 kcal/m.hr.¬¨‚àûC = 0.672 BTU/ft.hr.¬¨‚àûF = 1.163 W/m. ¬¨‚àûK

1 BTU/ft¬¨‚â§.hr.¬¨‚àûF/ft = 1.488 kcal/m¬¨‚â§. hr.¬¨‚àûC/m

1 BTU/ft¬¨‚â§.hr.¬¨‚àûF/inch = 1.488 kcal/m¬¨‚â§. hr.¬¨‚àûC/m

1 kcal/m.hr.¬¨‚àûC = 0.672 BTU/ft.hr.¬¨‚àûF = 1.163 W/m. ¬¨‚àûK

1 W/cm.¬¨‚àûC = 85.985 kcal/m.hr.¬¨‚àûC = 57.779 BTU/ft.hr.¬¨‚àûF

_ A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the$?

Atomic weight of the metal is 2

Atomic weight of the metal is 4

Equivalent weight of the metal is 4

Atomic weight of the metal is 2

Equivalent weight of the metal is 8

_ N.T.P. corresponds to$?

760 mm Hg gauge pressure & 0¬¨‚àûC

1 atm.absolute pressure& 0¬¨‚àûC

760 mm Hg gauge pressure & 0¬¨‚àûC

101.325 KPa gauge pressure & 0¬¨‚àûC

_ The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation$?

Decreases with increasing pressure

Becomes zero at the critical point

_ Colligative properties of a dilute solution are those which depend entirely upon the$?

Chemical composition of the solute

Number of solute molecules contained in a given volume of the solvent

_ The boiling points for pure water and pure toluene are 100¬¨‚àûC and 110.6¬¨‚àûC respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is$?

Between 100 and 110¬¨‚àûC

336 + Mcqs in Stoichiometry in Chemical Engineering Page 3 McqOptions

101.	/_Kopp's rule is useful for the determination of?
A.	Molal heat capacities of gases
B.	Heat capacities of solids
C.	Activation energy
D.	Heat capacities of gases
Answer» C. Activation energy

Discussion

102.	/_The molar composition of a gas is 10% H‚Äö√á√á, 10% O‚Äö√á√á, 30% CO‚Äö√á√á and balance H‚Äö√á√áO. If 50% H‚Äö√á√áO condenses, the final mole percent of H‚Äö√á√á in the gas on a dry basis will bebe?
A.	10%
B.	5%
C.	18.18%
D.	20%
Answer» E.

Discussion

103.	/_The value of Trouton's ratio (≈í¬™b/Tb) for a number of substances is 21 (where, ≈í¬™b = molal that of vaporisation of a substance at its normal boiling point, KCal/kg. mole and Tb = normal boiling point, ¬¨‚àûK). The Kis-tyakowsky equation is used for calculation of Trouton's ratio of __________ liquids.?
A.	Polar
B.	Non-polar
C.	Both A & B
D.	Neither A nor B
Answer» D. Neither A nor B

Discussion

104.	/_The temperature of a gas in a closed container is 27¬¨‚àû C. If the temperature of the gas is incresed to 300¬¨‚àû C, then the pressure exerted is?
A.	Doubled
B.	Halved
C.	Trebled
D.	Unpredictable
Answer» E.

Discussion

105.	/_Assuming that CO‚Äö√á√á obeys perfect gas law, calculate the density of CO‚Äö√á√á (in kg/m¬¨‚â•) at 263¬¨‚àûC and 2 atm.?
A.	1
B.	2
C.	3
D.	4
Answer» C. 3

Discussion

106.	/_The heat evolved in the combustion of benzene is represented by the equation: C‚Äö√á√úH‚Äö√á√ú + 7.5 O‚Äö√á√á = 6CO‚Äö√á√á + 3H‚Äö√á√áO, ≈í√ÆH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C‚Äö√á√úH‚Äö√á√ú is burnt in an open container, will be __________ kJ/kgmole.?
A.	+816.15
B.	+1632.3
C.	-1632.3
D.	-2448.45
Answer» D. -2448.45

Discussion

107.	/_A gas at 0¬¨‚àûC is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be?
A.	-136.5¬¨‚àûC
B.	- 136.5¬¨‚àûK
C.	-273¬¨‚àûC
D.	0¬¨‚àûK
Answer» B. - 136.5¬¨‚àûK

Discussion

108.	/_Which of the following gases will have the- highest kinetic energy per mole at the same pressure & temperature??
A.	Chlorine
B.	Nitrogen
C.	Ethane
D.	All of the above
Answer» E.

Discussion

109.	/_Density of carbon dioxide is __________ kg/Nm¬¨‚â•.?
A.	44/22400
B.	44/22.4
C.	22.4/44
D.	None of these
Answer» C. 22.4/44

Discussion

110.	/_An ideal gas can be liquified, because?
A.	Its molecular size is very small
B.	Its critical temperature is more than 0¬¨‚àûC
C.	Forces operative between its molecules are negligible
D.	It gets solidified directly without becoming liquid
Answer» D. It gets solidified directly without becoming liquid

Discussion

111.	/_One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH‚Äö√á√ë + 2O‚Äö√á√á ‚Äö√ú√≠ CO‚Äö√á√á + 2H‚Äö√á√áO. Both the reactants and products are in gas phase. ≈í√ÆH¬¨‚àû298 = - 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about?
A.	0.19
B.	0.33
C.	0.40
D.	0.67
Answer» B. 0.33

Discussion

112.	/_Dissolving a solute in a solvent does not change its?
A.	Specific heat
B.	Vapour pressure
C.	Viscosity
D.	None of these
Answer» E.

Discussion

113.	/_A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal?
A.	Kinetic energy
B.	Intermolecular forces of attraction
C.	Potential energy
D.	Total energy
Answer» B. Intermolecular forces of attraction

Discussion

114.	/_The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface. This statement pertaining to the solubility of gases in liquid is the __________ law.?
A.	Raoult's
B.	Henry's
C.	Amgat's
D.	None of these
Answer» C. Amgat's

Discussion

115.	/_The vapor pressure of water at 100¬¨‚àûC is?
A.	100N/m¬¨‚â§
B.	76 cms of Hg
C.	13.6 cms of Hg
D.	760 mm wc
Answer» C. 13.6 cms of Hg

Discussion

116.	/_The reverse process of fractional crystallisation is called?
A.	Stripping
B.	Leaching
C.	Differential distillation
D.	Absorption
Answer» C. Differential distillation

Discussion

117.	/_500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be __________ mm Hg.?
A.	650
B.	700
C.	600
D.	375
Answer» B. 700

Discussion

118.	/_In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.?
A.	Increase
B.	Decrease
C.	Remain unchanged
D.	None of these
Answer» C. Remain unchanged

Discussion

119.	/_In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the?
A.	Total pressure
B.	Absolute humidity at a given temperature
C.	Both A & B
D.	Neither A nor B
Answer» D. Neither A nor B

Discussion

120.	/_Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ≈í√ÆH = heat of mixing, and ≈í√ÆV = volume change on mixing ) ??
A.	≈í√ÆH = 1 (+ ve)and ≈í√Æ V = -ve
B.	≈í√ÆH = 0
C.	≈í√ÆV = 0
D.	Both B and C
Answer» E.

Discussion

121.	/_Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half, will result in __________ in the volume of the gas.?
A.	No change
B.	Doubling
C.	L/4th reduction
D.	Four fold increase
Answer» C. L/4th reduction

Discussion

122.	/_Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules?
A.	Do not lose energy on collision
B.	Are above the inversion temperature
C.	Do not exert attractive force on each other
D.	Do work equal to loss in kinetic energy
Answer» D. Do work equal to loss in kinetic energy

Discussion

123.	/_At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature.?
A.	Varies linearly
B.	Increases
C.	Decreases
D.	Does not vary
Answer» C. Decreases

Discussion

124.	/_With increase in temperature, the surface tension of water?
A.	Increases
B.	Decreases
C.	Remains constant
D.	Increases linearly
Answer» C. Remains constant

Discussion

125.	/_A gas at 0¬¨‚àûC was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be?
A.	0¬¨‚àûC
B.	0¬¨‚àûK
C.	-136.5¬¨‚àûC
D.	-136.5¬¨‚àûK
Answer» D. -136.5¬¨‚àûK

Discussion

126.	/_Ideal solution is formed, when its components have zero?
A.	Heat of mixing
B.	Volume change
C.	Both A & B
D.	Neither A nor B
Answer» D. Neither A nor B

Discussion

127.	_ No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules$?
A.	Collide without loss of energy
B.	Do work equal to loss in kinetic energy
C.	Are above the inversion temperature
D.	Exert no attractive force on each other
Answer» D. Exert no attractive force on each other

Discussion

128.	_ One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH‚Äö√á√ë + 2O‚Äö√á√á ‚Äö√ú√≠ CO‚Äö√á√á + 2H‚Äö√á√áO. Both the reactants and products are in gas phase. ≈í√ÆH¬¨‚àû298 = - 730 kJ/mole of methane. If the average specific heat of all the gases/vapour is 40 J/mole.K, the maximum temperature rise of the exhaust gases in ¬¨‚àûC would be approximately equal to$?
A.	1225
B.	1335
C.	1525
D.	1735
Answer» E.

Discussion

129.	_ Compressibility factor of a real gas is the ratio of the actual volume to that predicted by ideal gas law. As the pressure of the gas approaches zero, the compressibility factor approaches$?
A.	‚Äö√ √ª
B.	0
C.	1
D.	0.24
Answer» D. 0.24

Discussion

130.	_ The depression in freezing point of a solution is$?
A.	Inversely proportional to the mass of solvent
B.	Directly proportional to the mole of solute
C.	Both A & B
D.	Neither A nor B
Answer» D. Neither A nor B

Discussion

131.	_ A perfectly insulated container of volume V is divided into two equal halves by a partition. One side is under vacuum, while the other side has one mole of an ideal gas (with constant heat capacity) at 298 K. If the partition is broken, the final temperature of the gas in the container$?
A.	Will be greater than 298 K
B.	Will be 298 K
C.	Will be less than 298 K
D.	Can not be determined
Answer» D. Can not be determined

Discussion

132.	_ The temperature at which a real gas obeys Boyle's law is termed as the$?
A.	Triple point
B.	Boyle's temperature
C.	Eutectic point
D.	Inversion temperature
Answer» C. Eutectic point

Discussion

133.	_ Pick out the wrong unit conversion of thermal conductivity.$?
A.	1 BTU/ft¬¨‚â§.hr.¬¨‚àûF/ft = 1.488 kcal/m¬¨‚â§. hr.¬¨‚àûC/m
B.	1 BTU/ft¬¨‚â§.hr.¬¨‚àûF/inch = 1.488 kcal/m¬¨‚â§. hr.¬¨‚àûC/m
C.	1 kcal/m.hr.¬¨‚àûC = 0.672 BTU/ft.hr.¬¨‚àûF = 1.163 W/m. ¬¨‚àûK
D.	1 W/cm.¬¨‚àûC = 85.985 kcal/m.hr.¬¨‚àûC = 57.779 BTU/ft.hr.¬¨‚àûF
Answer» C. 1 kcal/m.hr.¬¨‚àûC = 0.672 BTU/ft.hr.¬¨‚àûF = 1.163 W/m. ¬¨‚àûK

Discussion

134.	_ A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the$?
A.	Atomic weight of the metal is 4
B.	Equivalent weight of the metal is 4
C.	Atomic weight of the metal is 2
D.	Equivalent weight of the metal is 8
Answer» C. Atomic weight of the metal is 2

Discussion

135.	_ Number of gram equivalent of solute dissolved in one litre of solution is called its$?
A.	Normally
B.	Molarity
C.	Molality
D.	Formality
Answer» B. Molarity

Discussion

136.	_ Which of the following gases is the most soluble in water?$?
A.	NH‚Äö√á√â
B.	CO‚Äö√á√á
C.	H‚Äö√á√áS
D.	CH‚Äö√á√ë
Answer» B. CO‚Äö√á√á

Discussion

137.	_ The value of gas constant 'R' is __________ kcal/kg.mole.¬¨‚àûC.$?
A.	2.79
B.	1.987
C.	3.99
D.	None of these
Answer» E.

Discussion

138.	_ On mixing 56 gm of CaO with 63 gm of HNO‚Äö√á√â, the amount of Ca(NO‚Äö√á√â)‚Äö√á√á formed is __________ gm.$?
A.	82
B.	164
C.	41
D.	8.2
Answer» B. 164

Discussion

139.	_ Which of the following has the smallest least effect on the solubility of a solute into the solvent?$?
A.	Nature of the solute
B.	Nature of the solvent
C.	Temperature
D.	Pressure
Answer» E.

Discussion

140.	_ N.T.P. corresponds to$?
A.	1 atm.absolute pressure& 0¬¨‚àûC
B.	760 mm Hg gauge pressure & 0¬¨‚àûC
C.	760 torr & 15¬¨‚àûC
D.	101.325 KPa gauge pressure & 0¬¨‚àûC
Answer» B. 760 mm Hg gauge pressure & 0¬¨‚àûC

Discussion

141.	_ With increase in the temperature of pure (distilled) water, its$?
A.	POH decreases and pH increases
B.	POH and pH both 4ecreases
C.	PH and pOH both increases
D.	PH decreases and pOH increases
Answer» C. PH and pOH both increases

Discussion

142.	_ Which of the following is followed by an ideal solution ?$?
A.	Boyle's law
B.	Amgat's law
C.	Raoult's law
D.	Trouton's rule
Answer» D. Trouton's rule

Discussion

143.	_ __________ equation gives the effect of temperature on heat of reaction.$?
A.	Kirchoffs
B.	Maxwell's
C.	Antonie
D.	Kistyakowsky
Answer» B. Maxwell's

Discussion

144.	_ pH value of an alkaline solution is$?
A.	7
B.	> 7
C.	< 7
D.	Constant over a wide range
Answer» C. < 7

Discussion

145.	_ If 1 Nm¬¨‚â• of O‚Äö√á√á contains 'N' number of molecules, then number of molecules in 2Nm¬¨‚â• of SO‚Äö√á√á will be$?
A.	N
B.	N/2
C.	2N
D.	4N
Answer» D. 4N

Discussion

146.	_ For a neutral solution (pH = 7), the value of[H‚Äö√Ö‚à´] [OH‚Äö√Ö¬™] is equal to$?
A.	0
B.	1
C.	< 1
D.	> 1
Answer» C. < 1

Discussion

147.	_ The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation$?
A.	Increases with pressure rise
B.	Decreases with increasing pressure
C.	Becomes zero at the critical point
D.	Both B & C
Answer» E.

Discussion

148.	_ 1 BTU/ft¬¨‚â• is approximately equal to __________ kcal/m¬¨‚â•.$?
A.	1
B.	9
C.	4
D.	252
Answer» C. 4

Discussion

149.	_ Colligative properties of a dilute solution are those which depend entirely upon the$?
A.	Constitution of the solute
B.	Chemical composition of the solute
C.	Number of solute molecules contained in a given volume of the solvent
D.	None of these
Answer» B. Chemical composition of the solute

Discussion

150.	_ The boiling points for pure water and pure toluene are 100¬¨‚àûC and 110.6¬¨‚àûC respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is$?
A.	Less than 100¬¨‚àûC
B.	100¬¨‚àûC
C.	Between 100 and 110¬¨‚àûC
D.	110.6¬¨‚àûC
Answer» D. 110.6¬¨‚àûC

Discussion

Explore topic-wise MCQs in Chemical Engineering.

*/*_Kopp's rule is useful for the determination of?

*/*_The molar composition of a gas is 10% H‚Äö√á√á, 10% O‚Äö√á√á, 30% CO‚Äö√á√á and balance H‚Äö√á√áO. If 50% H‚Äö√á√áO condenses, the final mole percent of H‚Äö√á√á in the gas on a dry basis will bebe?

*/*_The temperature of a gas in a closed container is 27¬¨‚àû C. If the temperature of the gas is incresed to 300¬¨‚àû C, then the pressure exerted is?

*/*_Assuming that CO‚Äö√á√á obeys perfect gas law, calculate the density of CO‚Äö√á√á (in kg/m¬¨‚â•) at 263¬¨‚àûC and 2 atm.?

*/*_A gas at 0¬¨‚àûC is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be?

*/*_Which of the following gases will have the- highest kinetic energy per mole at the same pressure & temperature??

*/*_Density of carbon dioxide is __________ kg/Nm¬¨‚â•.?

*/*_An ideal gas can be liquified, because?

*/*_Dissolving a solute in a solvent does not change its?

*/*_A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal?

*/*_The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface. This statement pertaining to the solubility of gases in liquid is the __________ law.?

*/*_The vapor pressure of water at 100¬¨‚àûC is?

*/*_The reverse process of fractional crystallisation is called?

*/*_500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be __________ mm Hg.?

*/*_In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.?

*/*_In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the?

*/*_Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ≈í√ÆH = heat of mixing, and ≈í√ÆV = volume change on mixing ) ??

*/*_Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half, will result in __________ in the volume of the gas.?

*/*_Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules?

*/*_At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature.?

*/*_With increase in temperature, the surface tension of water?

*/*_A gas at 0¬¨‚àûC was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be?

*/*_Ideal solution is formed, when its components have zero?

_ No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules$?

_ Compressibility factor of a real gas is the ratio of the actual volume to that predicted by ideal gas law. As the pressure of the gas approaches zero, the compressibility factor approaches$?

_ The depression in freezing point of a solution is$?

_ A perfectly insulated container of volume V is divided into two equal halves by a partition. One side is under vacuum, while the other side has one mole of an ideal gas (with constant heat capacity) at 298 K. If the partition is broken, the final temperature of the gas in the container$?

_ The temperature at which a real gas obeys Boyle's law is termed as the$?

_ Pick out the wrong unit conversion of thermal conductivity.$?

_ A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the$?

_ Number of gram equivalent of solute dissolved in one litre of solution is called its$?

_ Which of the following gases is the most soluble in water?$?

_ The value of gas constant 'R' is __________ kcal/kg.mole.¬¨‚àûC.$?

_ On mixing 56 gm of CaO with 63 gm of HNO‚Äö√á√â, the amount of Ca(NO‚Äö√á√â)‚Äö√á√á formed is __________ gm.$?

_ Which of the following has the smallest least effect on the solubility of a solute into the solvent?$?

_ N.T.P. corresponds to$?

_ With increase in the temperature of pure (distilled) water, its$?

_ Which of the following is followed by an ideal solution ?$?

_ __________ equation gives the effect of temperature on heat of reaction.$?

_ pH value of an alkaline solution is$?

_ If 1 Nm¬¨‚â• of O‚Äö√á√á contains 'N' number of molecules, then number of molecules in 2Nm¬¨‚â• of SO‚Äö√á√á will be$?

_ For a neutral solution (pH = 7), the value of[H‚Äö√Ö‚à´] [OH‚Äö√Ö¬™] is equal to$?

_ The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation$?

_ 1 BTU/ft¬¨‚â• is approximately equal to __________ kcal/m¬¨‚â•.$?

_ Colligative properties of a dilute solution are those which depend entirely upon the$?

/_Kopp's rule is useful for the determination of?

/_The molar composition of a gas is 10% H‚Äö√á√á, 10% O‚Äö√á√á, 30% CO‚Äö√á√á and balance H‚Äö√á√áO. If 50% H‚Äö√á√áO condenses, the final mole percent of H‚Äö√á√á in the gas on a dry basis will bebe?

/_The temperature of a gas in a closed container is 27¬¨‚àû C. If the temperature of the gas is incresed to 300¬¨‚àû C, then the pressure exerted is?

/_Assuming that CO‚Äö√á√á obeys perfect gas law, calculate the density of CO‚Äö√á√á (in kg/m¬¨‚â•) at 263¬¨‚àûC and 2 atm.?

/_A gas at 0¬¨‚àûC is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be?

/_Which of the following gases will have the- highest kinetic energy per mole at the same pressure & temperature??

/_Density of carbon dioxide is __________ kg/Nm¬¨‚â•.?

/_An ideal gas can be liquified, because?

/_Dissolving a solute in a solvent does not change its?

/_A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal?

/_The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface. This statement pertaining to the solubility of gases in liquid is the __________ law.?

/_The vapor pressure of water at 100¬¨‚àûC is?

/_The reverse process of fractional crystallisation is called?

/_500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be __________ mm Hg.?

/_In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.?

/_In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the?

/_Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ≈í√ÆH = heat of mixing, and ≈í√ÆV = volume change on mixing ) ??

/_Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half, will result in __________ in the volume of the gas.?

/_Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules?

/_At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature.?

/_With increase in temperature, the surface tension of water?

/_A gas at 0¬¨‚àûC was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be?

/_Ideal solution is formed, when its components have zero?