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Q1. | Osmotic pressure of the solution can be increased by |

A. | decreasing its temperature. [Wrong Answer] |

B. | increasing the volume of the vessel containing the solution. [Wrong Answer] |

C. | diluting the solution. [Wrong Answer] |

D. | none of these. [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ Degrees of freedom will be equal to the number of components for a system comprising of

only soluble liquid components.

partially miscible two liquid components system having two phases.

two liquid components and one solute (soluble in both the liquids).

none of these.

⇒ The value of (

*C*-

_{p}*C*)for a real gas obeying Vander Wall's equation is

_{v}R

> R

< R

0.5 R

⇒ Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the

vapor follows the ideal gas law.

molal latent heat of vaporisation is constant within the limited temperature range.

volume in the liquid state is negligible compared with that in the vapor state.

all (a), (b) & (c).

⇒ Kopp's rule is concerned with the calculation of

thermal conductivity.

heat capacity.

viscosity.

surface tension.

⇒ Methane is mixed with stoichiometric proportion of oxygen and completely combusted. The number of additional specifications required to determine the product flow rate and composition is

0

1

2

3

⇒ Number of gm moles of solute dissolved in one litre of a solution is called its

equivalent weight

molarity

molality

normality

⇒ The heat of adsorption of a gas caused by Van der Walls forces of attraction and capillarity is equal to the heat of

normal condensation.

wetting.

sum of (a) and (b).

difference of (a) and (b).

⇒ 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.

⇒ If pH value of a solution is 8, then its pOH value will be

6

1

7

10

⇒ Number of gm moles of solute dissolved in 1 kg of solvent is called its

normality

molarity

molality

formality

⇒ For an endothermic reaction, the minimum value of energy of activation will be (where, Δ

*H*= enthalpy of the reaction)

Δ

*H*

>Δ

*H*

<Δ

*H*

0

⇒ Which of the following is not used for computing latent heat of vaporisation ?

Clausius-Clayperon equation

Reference substance plots based on Durhing & Othmer plots

Kistyakowasky's equation

Hess's law of constant heat summation

⇒ Raoult's law states that 'the equilibrium vapor pressure that is exerted by a component in a solution is proportional to the mole fraction of that component'. This generalisation is based on the assumption that the

sizes of the component molecules are approximately equal.

attractive forces between like and unlike molecules are approximately equal.

component molecules are non-polar and no chemical combination or molecular association between unlike molecules takes place in the formation of the solution.

all (a), (b) & (c).

⇒ A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be

-136.5°C

- 136.5°K

-273°C

0°K

⇒ 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)

⇒ For any system, the __________ heat of solution is dependent on the temperature and the adsorbate concentration.

integral

differential

both (a) & (b)

neither (a) nor (b)

⇒ __________ equation relates latent heat and boiling point.

Antonie

Kistyakowsky

Kopp's

Trouton's

⇒ At standard conditio

15

30

85

170

⇒ Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the 'corresponding states'. At equal reduced conditions i.e., at the corresponding state, the __________ of different gases are nearly the same.

compressibility

molecular weight

humidity

none of these

⇒ One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m

^{3}. It cools to 98°C ; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m

^{3}. The latent heat of condensation (kJ/kg

^{-1}) under these conditions is

40732

2676

2263

540

⇒ Gases having same reduced temperatures and reduced pressures

deviate from ideal gas behaviour to the same degree.

have nearly the same compressibility factor.

both (a) and (b).

neither (a) nor (b).

⇒ If 1 Nm

^{3}of O

_{2}contains 'N' number of molecules, then number of molecules in 2Nm

^{3}of SO

_{2}will be

N

N/2

2N

4N

⇒ Pick out the wrong unit conversion.

l kgf= 9.8 Newton.

1 stoke = 1 m

^{2}/second.

1 Pascal second = 10 poise.

1 ppm = 1 ml/m

^{3}= 1 mg/kg.

⇒ If the pH value of a solution changes by one unit, it implies that hydrogen ion concentration in the solution will change __________ times.

10

20

70

100

⇒ 1 Kcal/kg. °C is equivalent to __________ BTU/lb. °F.

1

2.42

4.97

none of these

⇒ The value of Trouton's ratio (

*λ*/

_{b}*T*) for a number of substances is 21 (where,

_{b}*λ*= molal that of vaporisation of a substance at its normal boiling point, KCal/kg. mole and

*b**T*= normal boiling point, °K). The Kis-tyakowsky equation is used for calculation of Trouton's ratio of __________ liquids.

_{b}polar

non-polar

both (a) & (b)

neither (a) nor (b)

⇒ Heat of reaction is not influenced by

the route/method through which final products are obtained.

the physical state (e.g., solid, liquid or gaseous) of reactants and products.

whether the reaction is carried out at constant temperature or constant pressure.

none of these.

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

Nature of the solute

Nature of the solvent

Temperature

Pressure

⇒ Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, Δ

*H*= heat of mixing, and Δ

*V*= volume change on mixing ) ?

Δ

*H*= 1 (+

*ve*)and Δ

*V*= -

*ve*

Δ

*H*= 0

Δ

*V*= 0

both (b) and (c)

⇒ A saturated vapor on being compressed would

condense

form wet steam

both (a) & (b)

neither (a) nor (b)