Question is ⇒ Number of gm moles of solute dissolved in 1 kg of solvent is called its, Options are ⇒ (A) normality, (B) molarity, (C) molality, (D) formality, (E) , Leave your comments or Download question paper.

Question is ⇒ Number of gm moles of solute dissolved in 1 kg of solvent is called its, Options are ⇒ (A) normality, (B) molarity, (C) molality, (D) formality, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Number of gm moles of solute dissolved in 1 kg of solvent is called its
A.	normality [Wrong Answer]
B.	molarity [Wrong Answer]
C.	molality [Correct Answer]
D.	formality [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : C 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 :

⇒ Concentration of a solution expressed in terms of __________ is independent of temperature.
molarity
normality
molality
none of these

⇒ Density of carbon dioxide is __________ kg/Nm³.
44/22400
44/22.4
22.4/44
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 10²³.
The binary mixture of a particular com-positidn in both vapor and liquid state is known as an azeotropic mixture

⇒ Othmer chart is useful in estimating the heat of
mixing
wetting
adsorption
none of these

⇒ The crystallisation of a solute from a solution may be done by
removal of pure solvent by evaporation.
change of temperature thereby causing supersaturation.
changing the nature of the system by the addition of a more soluble material.
all (a), (b) &(c).

⇒ 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).

⇒ Pick out the wrong statement.
Reduced temperature' of a substance is the ratio of its existing temperature to its critical temperature, both expressed on celsius scale.
Reduced pressure' is the ratio of the existing pressure of a substance to its critical pressure.
Reduced volume' is the ratio of the existing molal volume of a substance to its critical molal volume.
none of these.

⇒ A vessel of volume 1000 m³ contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately
17
20
25
34

⇒ For an endothermic reaction, the minimum value of energy of activation will be (where, ΔH = enthalpy of the reaction)
Δ H
>ΔH
<ΔH
0

⇒ In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is
independent of the temperature.
increased with the increase in pressure.
decreased with the increase in pressure.
unchanged by the pressure change.

⇒ Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because
the strong base and strong acid reacts completely.
the salt formed does not hydrolyse.
only OH^- and H⁺ ions react in every case.
the strong base and strong acid reacts in aqueous solution.

⇒ On mixing 56 gm of CaO with 63 gm of HNO₃, the amount of Ca(NO₃)₂ formed is __________ gm.
82
164
41
8.2

⇒ Heat of neutralisation of HCl and NaOH is - 57.46 kJ/Kg mole. The heat of ionisation of water will be __________ kJ/Kg mole.
57.46
-57.46
114.92
-28.73

⇒ The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water X^w in the vapour phase satisfies
0 < X_w < 0.5
X_w = 0.5
0.5 < X_w < 1.0
X_w = 1.0

⇒ __________ kg of CaC0₃ on heating will give 56 kg of CaO.
56 .
100
144
1000

⇒ The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the
temperature & pressure.
number of intermediate chemical reactions involved.
state of aggregation & the state of combination at the beginning & the end of the reaction.
none of these.

⇒ Pick out the wrong statement.
The effect of pressure on heat capacity of gases at pressure above one atmosphere and above the critical temperature is negligible.
The value of C_p of gases increases with increase in pressure, above atmospheric pressure.
The value of C_p at critical temperature and pressure reaches infinity.
all (a), (b), and (c).

⇒ 1 ata is equivalent to
1 atm.
10 torr
0.98 Pascal
1 kgf/cm²

⇒ 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)

⇒ The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour
measures the elevation in boiling point.
is not dependent on the temperature.
is a function of the liquid phase composition.
measures the depression in freezing point.

⇒ Pick out the wrong statement.
To make 100 kg of a solution containing 40% salt by mixing solution A (containing 25% salt) and solution B (containing 50% salt), the amount of solution A required is 40 kg.
1.2 gm atoms of carbon and 1.5 gm moles of oxygen are reacted to give 1 gm mole of carbon dioxide. The limiting reactant is carbon. The percent excess reactant supplied is 25.
A gas bubble at a pressure of P_g is passed through a solvent with a saturation vapour pressure of Ps. If the time of passage of the bubble is long and air is insoluble in the solvent, the mole fraction of solvent in the bubble will be equal to P_s/P_g.
A supersaturated solution of a sparingly soluble solute, at a concentration of C, is being fed to a crystalliser at a volumetric flow rate of V. The solubility .of the solute is C₁. The output rate of solids from an efficient crystalliser is (C + C₁) V.

⇒ 1m³ is approximately equal to
28 litres
35 ft³
4.5 litres
4.5 ft³

⇒ How much O₂ can be obtained from 90 kg of water ?
32 kg
80 kg
64 kg
90 kg

⇒ The heat of solution depends upon the
nature of solvent
concentration of solution
nature of solute
all (a), (b) & (c)

⇒ The pH value of a solution is 5.9. If the hydrogen ion concentration is decreased hundred times, the solution will be
basic
more acidic
neutral
of the same acidity

⇒ 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.
no change
doubling
l/4th reduction
four fold increase

⇒ 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
x₁/x₂
x₂/x₁
1 - (x₁/x₂)
1/x₂

⇒ 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
will be greater than 298 K.
will be 298 K.
will be less than 298 K.
can not be determined.

⇒ Heat of solution in a system in which both solute and solvent are liquids is termed as
heat of solvation.
heat of hydration.
standard integral heat of solution.
heat of mixing.

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