A. The solvent begins to freeze out even before
B. It will undergo no change until
C. It will not solidify even on
D. None of these
Related Mcqs:
- 80 kg of Na2SO4 (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na2SO4 .10H2O crystals separate out. The weight fraction of Na2SO4 in the remaining solution is_________________?
A. 0.00
B. 0.18
C. 0.24
D. 1.00 - Eutectic reaction for iron-carbon system occurs at a temperature of _______________ °C ?
A. 723
B. 959
C. 1147
D. 1493 - The temperature at the eutectic point of the system is the _____________ temperature that can be attained in the system?
A. Lowest
B. Highest
C. Average
D. None of these - The relation connecting the fugacities of various components in a solution with one another and to composition at constant temperature and pressure is called the _____________ equation?
A. Gibbs-Duhem
B. Van Laar
C. Gibbs-Helmholtz
D. Margules - Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which___________________?
A. A homogeneous solution (say of phenol water) is formed
B. Mutual solubility of the two liquids shows a decreasing trend
C. Two liquids are completely separated into two layers
D. None of these - At room temperature, the product [H+] [OH-] in a solution is 10-14 moles/litre. If, [OH-] = 10-6 moles/litre, then the pH of the solution will be ________________________?
A. 6
B. 8
C. 10
D. 12 - In a binary liquid system, the composition expressed as _______________ is independent of the temperature & pressure?
A. Kg of solute/kg of solvent
B. Kg-mole of solute/kg-mole of solvent
C. Kg-mole of solute/1000 kg of solvent
D. All A., B. & C. - A solution with reasonably permanent pH is called a/an _______________ solution?
A. Ideal
B. Non-ideal
C. Buffer
D. Colloidal - In an eutectic system, two elements are completely____________________?
A. Soluble in solid state
B. Insoluble in liquid state
C. Insoluble in both solid & liquid state
D. Soluble in liquid state - How many phases are present at eutectic point ?
A. 2
B. 1
C. 3
D. unpredictable
