Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
The molar composition of a gas is 10% H_{2}, 10% O_{2}, 30% CO_{2} and balance H_{2}O. If 50% H_{2}O condenses, the final mole percent of H_{2} in the gas on a dry basis will be  
A.  0.1 [Wrong Answer] 
B.  0.05 [Wrong Answer] 
C.  0.1818 [Wrong Answer] 
D.  0.2 [Correct Answer] 
View Answer
Explanation:
Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result 
Also Read Similar Questions Below :
⇒ In case of vaporliquid equilibria, which of the following does not account for gas phase deviation from ideality?
Use of equation of state
Fugacity coefficient
Activity coefficient
None of these
⇒ The number of H^{+} in 1 c.c solution of pH 13 is
6.023 xl0^{13}
6.023 x 10^{10}
6.023xl0^{7}
10^{13}
⇒ With increase in the temperature of pure (distilled) water, its
pOH decreases and pH increases.
pOH and pH both 4ecreases.
pH and pOH both increases.
pH decreases and pOH increases.
⇒ Pick out the wrong unit conversion.
1 J = 1 W.Second = 10^{7} ergs = 9.5 x 10^{4} BTU = 0.2389 calorie
1 Watt = 746 hp


⇒ The gravimetric (i.e., by weight) composition of a vapor saturated gas is independent of the
nature of both the gas & the liquid.
temperature.
total pressure.
none of these.
⇒ For an endothermic reaction, the minimum value of energy of activation will be (where, ΔH = enthalpy of the reaction)
Δ H
>ΔH
<ΔH
0
⇒ Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m^{3} . The diffusivity of aniline in air is 0.74xl0^{5}m^{2}/s.The numerical value of mass transfer coefficient is 7.4 x 10^{3}. The rate of evaporation of aniline is 2.97 x 10^{4}. Its units are
mole/s
mole/cm^{2}. s
mole/m^{2} . s
kmole/m^{2} . s
⇒ A sugar solution containing __________ percent sugar is equivalent to 1 Brix.
0.01
0.1
1
10
⇒ Concentration of a solution expressed in terms of __________ is independent of temperature.
molarity
normality
molality
none of these
⇒ Pick out the wrong statement.
Heat capacity of a diatomic gas is higher than that of a monoatomic gas.
Equal volumes of Argon and Krypton contain equal number of atoms.
Total number of molecules contained in 22.4 litres of hydrogen at NTP is 6.023 x 10^{23}.
The binary mixture of a particular compositidn in both vapor and liquid state is known as an azeotropic mixture
⇒ Pick out the wrong conversion formula for the conversion of weight units :
1 tonne = 1000 kg = 22.046 lbs
1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton
1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons
none of these
⇒ The unit of specific heat at constant pressure, C_{p}, in SI unit is
W/m^{2}°C
J/kg°K
W/m°K
J/m^{3}°K
⇒ Diffusion is that property by virtue of which a perfume bottle when opened up in a room, makes the whole room fragrant with its smell. If a perfume 'X' diffuses twice as fast as another perfume 'Y'; what is the molecular weight of 'Y', if the vapor density of gas 'X' is 2 ? Molecular weight of gas 'X' is to be assumed to be 2.
2
4
8
16
⇒ Pick out the wrong statement:
The integral heat of solution of either components can not be calculated from heat of mixing data.
The average value of heat of neutralisation of dilute solutions of weak acids and bases is much less compared to that for strong acids and bases.
The standard heat of solution of the hydrate of a substance is the difference between the heat of solution of the anhydrous substance and its heat of hydration.
The accompanying enthalpy change, when a solute is dissolved in solvent, depends upon the nature & amount of the solute & the solvent, on the temperature & on the initial & final concentrations of the solution.
⇒ 'Cox' chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the
temperature vs. log (vapor pressure).
vapor pressure vs. log (temperature).
log (temperature) vs. log (vapor pressure).
vapor pressure vs. temperature.
⇒ Pick out the wrong unit conversion of heat transfer rate.
1 kcal/hr= 1.163 Watt.
1 Watt = 1.163 kcal/hr.
1 BTU/ft^{2}.hr = 2.712 kcal/m^{2}.hr.
1 kcal/m^{2}.hr = 0.3687 BTU/ft^{2}.hr = 1.163 Watt/m^{2}.
⇒ Pick out the wrong unit conversion of calorific value.
1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg.
1 BTU/ft^{3} = 8.9 kcal/m^{3} = 0.038 MJ/m^{3}.
1 BTU/lb = 2.3 kcal/kg.
1 kcal/m^{3} = 0.1124 BTU/ft^{3}.
⇒ Avogadro's number is equal to
6.023 x 10^{23} molecules/kg.mole.
6.023 x 10^{23} molecules/gm.mole.
6.023 x 10^{16} molecules/kg.mole.
6.023 x 10^{26} molecules/gm.mole.
⇒ 1 bar is almost equal to __________ atmosphere.
1
10
100
1000
⇒ In osmosis through a semipermeable membrane, diffusion of the
solvent is from low concentration to high concentration region.
solvent is from high concentration to low concentration region.
solute takes place.
none of these.
⇒ The number of water molecules present in a drop of water weighing 0.018 gm is 6.023 x __________
10^{26}
10^{23}
10^{20}
10^{19 }
⇒ Which of the following is an exothermic reaction ?
Conversion of graphite to diamond
Decomposition of water
Dehydrogenation of ethane to ethylene
none of these
⇒ The value of gas constant 'R' is __________ kcal/kg.mole.°C.
2.79
1.987
3.99
none of these
⇒ The chemical nature of an element is independent of
its atomic number.
the number of protons or electrons present in it.
the number of neutrons present in it.
none of these.
⇒ A gas at 0°C was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be
0°C
0°K
136.5°C
136.5°K
⇒ How many phases are present at eutectic point ?
1
2
3
unpredictable
⇒ 1m^{3} is approximately equal to
28 litres
35 ft^{3}
4.5 litres
4.5 ft^{3}
⇒ Isotopes are atoms having the same
mass number
number of neutrons
atomic mass
none of these
⇒ 'Giga' stands for
10^{9}
10^{12}
10^{12}
10^{15}
⇒ Which of the following expressions defines the Baume gravity scale for liquids heavier than water ?
(141.5/G)  131.5
145  (145/G)
200(G1)
(400/G)  400
⇒ In case of vaporliquid equilibria, which of the following does not account for gas phase deviation from ideality?
Use of equation of state
Fugacity coefficient
Activity coefficient
None of these
⇒ The number of H^{+} in 1 c.c solution of pH 13 is
6.023 xl0^{13}
6.023 x 10^{10}
6.023xl0^{7}
10^{13}
⇒ With increase in the temperature of pure (distilled) water, its
pOH decreases and pH increases.
pOH and pH both 4ecreases.
pH and pOH both increases.
pH decreases and pOH increases.
⇒ Pick out the wrong unit conversion.
1 J = 1 W.Second = 10^{7} ergs = 9.5 x 10^{4} BTU = 0.2389 calorie
1 Watt = 746 hp


⇒ The gravimetric (i.e., by weight) composition of a vapor saturated gas is independent of the
nature of both the gas & the liquid.
temperature.
total pressure.
none of these.
⇒ For an endothermic reaction, the minimum value of energy of activation will be (where, ΔH = enthalpy of the reaction)
Δ H
>ΔH
<ΔH
0
⇒ Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m^{3} . The diffusivity of aniline in air is 0.74xl0^{5}m^{2}/s.The numerical value of mass transfer coefficient is 7.4 x 10^{3}. The rate of evaporation of aniline is 2.97 x 10^{4}. Its units are
mole/s
mole/cm^{2}. s
mole/m^{2} . s
kmole/m^{2} . s
⇒ A sugar solution containing __________ percent sugar is equivalent to 1 Brix.
0.01
0.1
1
10
⇒ Concentration of a solution expressed in terms of __________ is independent of temperature.
molarity
normality
molality
none of these
⇒ Pick out the wrong statement.
Heat capacity of a diatomic gas is higher than that of a monoatomic gas.
Equal volumes of Argon and Krypton contain equal number of atoms.
Total number of molecules contained in 22.4 litres of hydrogen at NTP is 6.023 x 10^{23}.
The binary mixture of a particular compositidn in both vapor and liquid state is known as an azeotropic mixture
⇒ Pick out the wrong conversion formula for the conversion of weight units :
1 tonne = 1000 kg = 22.046 lbs
1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton
1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons
none of these
⇒ The unit of specific heat at constant pressure, C_{p}, in SI unit is
W/m^{2}°C
J/kg°K
W/m°K
J/m^{3}°K
⇒ Diffusion is that property by virtue of which a perfume bottle when opened up in a room, makes the whole room fragrant with its smell. If a perfume 'X' diffuses twice as fast as another perfume 'Y'; what is the molecular weight of 'Y', if the vapor density of gas 'X' is 2 ? Molecular weight of gas 'X' is to be assumed to be 2.
2
4
8
16
⇒ Pick out the wrong statement:
The integral heat of solution of either components can not be calculated from heat of mixing data.
The average value of heat of neutralisation of dilute solutions of weak acids and bases is much less compared to that for strong acids and bases.
The standard heat of solution of the hydrate of a substance is the difference between the heat of solution of the anhydrous substance and its heat of hydration.
The accompanying enthalpy change, when a solute is dissolved in solvent, depends upon the nature & amount of the solute & the solvent, on the temperature & on the initial & final concentrations of the solution.
⇒ 'Cox' chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the
temperature vs. log (vapor pressure).
vapor pressure vs. log (temperature).
log (temperature) vs. log (vapor pressure).
vapor pressure vs. temperature.
⇒ Pick out the wrong unit conversion of heat transfer rate.
1 kcal/hr= 1.163 Watt.
1 Watt = 1.163 kcal/hr.
1 BTU/ft^{2}.hr = 2.712 kcal/m^{2}.hr.
1 kcal/m^{2}.hr = 0.3687 BTU/ft^{2}.hr = 1.163 Watt/m^{2}.
⇒ Pick out the wrong unit conversion of calorific value.
1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg.
1 BTU/ft^{3} = 8.9 kcal/m^{3} = 0.038 MJ/m^{3}.
1 BTU/lb = 2.3 kcal/kg.
1 kcal/m^{3} = 0.1124 BTU/ft^{3}.
⇒ Avogadro's number is equal to
6.023 x 10^{23} molecules/kg.mole.
6.023 x 10^{23} molecules/gm.mole.
6.023 x 10^{16} molecules/kg.mole.
6.023 x 10^{26} molecules/gm.mole.
⇒ 1 bar is almost equal to __________ atmosphere.
1
10
100
1000
⇒ In osmosis through a semipermeable membrane, diffusion of the
solvent is from low concentration to high concentration region.
solvent is from high concentration to low concentration region.
solute takes place.
none of these.
⇒ The number of water molecules present in a drop of water weighing 0.018 gm is 6.023 x __________
10^{26}
10^{23}
10^{20}
10^{19 }
⇒ Which of the following is an exothermic reaction ?
Conversion of graphite to diamond
Decomposition of water
Dehydrogenation of ethane to ethylene
none of these
⇒ The value of gas constant 'R' is __________ kcal/kg.mole.°C.
2.79
1.987
3.99
none of these
⇒ The chemical nature of an element is independent of
its atomic number.
the number of protons or electrons present in it.
the number of neutrons present in it.
none of these.
⇒ A gas at 0°C was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be
0°C
0°K
136.5°C
136.5°K
⇒ How many phases are present at eutectic point ?
1
2
3
unpredictable
⇒ 1m^{3} is approximately equal to
28 litres
35 ft^{3}
4.5 litres
4.5 ft^{3}
⇒ Isotopes are atoms having the same
mass number
number of neutrons
atomic mass
none of these
⇒ 'Giga' stands for
10^{9}
10^{12}
10^{12}
10^{15}
⇒ Which of the following expressions defines the Baume gravity scale for liquids heavier than water ?
(141.5/G)  131.5
145  (145/G)
200(G1)
(400/G)  400