The temperature at the eutectic point of the system is the _____________ temperature that can be attained in the system?

Related Mcqs:

1. If a solution of eutectic composition is cooled, _______________ reaching the eutectic temperature ?

   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

2. Eutectic reaction for iron-carbon system occurs at a temperature of _______________ °C ?

   A. 723
   B. 959
   C. 1147
   D. 1493

3. 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

4. Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is ___________________?

   A. 0
   B. ∞
   C. +ve
   D. -ve

5. 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

6. The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at ______________ percent relative humidity ?

   A. 0
   B. 100
   C. 50
   D. None of these

7. A gas can be liquefied by pressure alone only, when its temperature is _____________ its critical temperature?

   A. Less than
   B. More than
   C. Equal to or higher than
   D. Less than or equal to

8. Critical temperature is defined as the temperature above which a gas will____________________?

   A. Not liquify (barring exceptions)
   B. Immediately liquify
   C. Never liquify however high the pressure may be
   D. None of these

9. The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is__________________?

   A. Less pronounced
   B. More pronounced
   C. Equal
   D. Data insufficient, can’t be predicted

10. The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the ____________ temperature?

    A. Critical
    B. Boyle
    C. Inversion
    D. Reduced