6891. The osmotic pressure of a solution is directly proportional to the
Lowering of vapor pressure
Molecular concentration of the solute
Absolute temperature of a given concentration
All of the above
✅ The correct answer is option D.
Chemical Engineering
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6892. 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 correct answer is option A.
6893. 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
✅ The correct answer is option D.
6894. 1 gm mole of an alcohol whose molecular weight is 74 contains 48 gms of carbon, 10 gms of hydrogen and 16 gms of oxygen. Its molecular formula is
C₄H9OH
C₃H21OH
(C₂H₄)2H₂.OH
C2H33OH
✅ The correct answer is option A.
6895. Viscosity of 1 centipoise is equal to 1 centis-toke in case of
Water
Mercury
Carbon tetrachloride
None of these
✅ The correct answer is option A.
6896. For an ideal gas, the compressibility factor
Decreases with pressure rise
Is unity at all temperature
Is unity at Boyle’s temperature
Zero
✅ The correct answer is option B.
6897. At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to
Decrease in mean free path
Increased collision rate among molecules
Increase in molecular attraction
Increase in average molecular speed
✅ The correct answer is option C.
6898. In the reaction, Ca + 2H₂O = Ca(OH)₂ + H₂ ; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water? (atomic weight of calcium = 40)
4480
2240
1120
0.4
✅ The correct answer is option A.
6899. The most convenient way of expressing solution concentration is in terms of
Mole fraction
Normality
Molality
Molarity
✅ The correct answer is option D.
6900. A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are Xc and Xs respectively. Which of the following statement is correct?
Xc > Xs
Xc = Xs
Xc < Xs
Xc greater/less than Xs depending on the length of the cylinder
✅ The correct answer is option C.