Question is ⇒ A very dilute solution is prepared by dissolving 'x1' mole of solute in 'x2' mole of a solvent. The mole fraction of solute is approximately equal to, Options are ⇒ (A) x1/x2, (B) x2/x1, (C) 1 - (x1/x2), (D) 1/x2, (E) , Leave your comments or Download question paper.

Question is ⇒ A very dilute solution is prepared by dissolving 'x1' mole of solute in 'x2' mole of a solvent. The mole fraction of solute is approximately equal to, Options are ⇒ (A) x1/x2, (B) x2/x1, (C) 1 - (x1/x2), (D) 1/x2, (E) , Leave your comments or Download question paper. 1' mole of solute in 'x₂' mole of a solvent. The mole fraction of solute is approximately equal to, Options are ⇒ (A) x₁/x₂, (B) x₂/x₁, (C) 1 - (x₁/x₂), (D) 1/x₂, (E) , Leave your comments or Download question paper. '/> 1' mole of solute in 'x₂' mole of a solvent. The mole fraction of solute is approximately equal to, Options are ⇒ (A) x₁/x₂, (B) x₂/x₁, (C) 1 - (x₁/x₂), (D) 1/x₂, (E) , Leave your comments or Download question paper. '/>Previous question Next question


Q1.	A very dilute solution is prepared by dissolving 'x₁' mole of solute in 'x₂' mole of a solvent. The mole fraction of solute is approximately equal to
A.	x₁/x₂ [Correct Answer]
B.	x₂/x₁ [Wrong Answer]
C.	1 - (x₁/x₂) [Wrong Answer]
D.	1/x₂ [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Except for monoatomic gases, the molal heat capacity at constant volume for all gases is __________ Kcal/Kg mole.° K.
3
> 3
< 3
< 1

⇒ Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity ? Vapour pressure of water at 20°C is 17.5 mm Hg.
80.38
80
79.62
78.51

⇒ The hydroxyl ion (OH^-) concentration in a solution having pH value 3 will be
10^-11
10^-10
10^-3
10^-4

⇒ At higher temperature, molal heat capacities of most of the gases (at constant pressure) __________ with increase in temperature.
increases
decreases
remains unchanged
increases linearly

⇒ A butane isomerisation process produces 70 kmole/hr of pure isobutane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be
3 kmole/hr
4 kmole/hr
5 kmole/hr
6 kmole/hr

⇒ Addition of a non-volatile solute to a solvent produces a __________ in its solvent.
freezing point elevation
boiling point depression
vapor pressure lowering
all (a), (b) & (c)

⇒ One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH₄ + 2O₂ → CO₂ + 2H₂O. Both the reactants and products are in gas phase. ΔH°₂₉₈ = - 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 °C would be approximately equal to
1225
1335
1525
1735

⇒ Solutions having the same osmotic pressure are called __________ solutions.
dilute
ideal
isotonic
saturated

⇒ PH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be
0
10
7
14

⇒ 1 kg of calcium carbide (CaC₂) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour ?
5
10
15
20

⇒ Specific gravity on API scale is given by the relation(where, G = specific gravity at 15.5°C).
°API = 200(G - 1)
°API = (141.5/G) - 131.5
°API = (140/G) - 130
°API = 145 - (145/G)

⇒ 1 bar is almost equal to __________ atmosphere.
1
10
100
1000

⇒ The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be __________ times.
42737
4
2
42739

⇒ The molar composition of a gas is 10% H₂, 10% O₂, 30% CO₂ and balance H₂O. If 50% H₂O condenses, the final mole percent of H₂ in the gas on a dry basis will be
0.1
0.05
0.1818
0.2

⇒ Internal energy of a substance comprises of the __________ energy.
vibrational
rotational
translational
all (a), (b) & (c)

⇒ Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is x_B and the vapour pressures of benzene and water at these conditions are p_v^B and p_v^w respectively. The partial pressure of benzene in air-vapour mixture is
P_v^B
x_B.P_v^B
(P_atm - P_v^w)x_B
x_B.P_atm

⇒ Pick out the wrong unit conversion of mass transfer co-efficient.
1 lb/hr.ft³.atm. = 4.8182 kg/hr.m².bar
1 kg/hr.m².atm= 0.98687 kg/hr. m .bar
1 lb/hr . ft² = 4.8823 kg/hr . m²
1 kg/hr . m² = 4.8823 lb/hr . ft²

⇒ 1 torr is equivalent to
1 mm Hg
1 Pascal
1 ata
1 mm wc

⇒ Enthalpy of formation of NH₃ is - 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH₃ → N₂ + 3H₂, is equal to __________ kJ/kg. mole.
46
92
-23
-92

⇒ The quantity of heat required to evaporate 1 kg of a saturated liquid is called
specific heat
1 Kcal
sensible heat
latent heat

⇒ The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the
Trouton's rule
Kopp's rule
Antonie equation
Kistyakowsky equation

⇒ If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will
be reduced to l/4th.
increase four times.
increase two times.
none of these.

⇒ Kinematic viscosity of 1 m² /second is equivalent to __________ stokes.
10
10²
10³
10⁴

⇒ PH value of H₂SO₄ (5% concentration) is
5
7
> 7
< 7

⇒ A car tyre of volume 0.057 m³ is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is
380
630
760
880

⇒ With rise in temperature, the heat capacity of a substance
increases
decreases
remains unchanged
either (a) or (b); depends on the substance

⇒ The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vapourised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is
0.4
0.6
0.8
0.2

⇒ __________ equation gives the effect of temperature on heat of reaction.
Kirchoffs
Maxwell's
Antonie
Kistyakowsky

⇒ The temperature of a gas in a closed container is 27° C. If the temperature of the gas is incresed to 300° C, then the pressure exerted is
doubled.
halved.
trebled.
unpredictable.

⇒ 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 10²³.
The binary mixture of a particular com-positidn in both vapor and liquid state is known as an azeotropic mixture