Which of the following liquid metals has the highest thermal conductivity ?

Related Mcqs:

1. Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of________________?

   A. Mixing B. Adsorption C. Wetting D. Complete wetting...

2. “The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface”. This statement pertaining to the solubility of gases in liquid is the ______________ law?

   A. Raoult’s B. Henry’s C. Amagat’s D. None of these...

3. According to the kinetic theory, the thermal conductivity of a monatomic gas is proportional to___________________?

   A. T B. T0.5 C. T1.5 D. T2...

4. A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is φi yi P = Yi xifi° where, Φ is a vapor fugacity component, Yi is the liquid activity coefficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of ______________________?

   A. Temperature only B. Temperature and pressure only C. Temperature, pressure and liquid composition xi only D. Temperature, pressure, liquid composition xi and vapour composition yi...

5. The freezing point of a liquid decreases when the pressure is increased, if the liquid ____________ while freezing?

   A. Contracts B. Expands C. Does not change in volume D. Either (A), B. or (C)...

6. A liquid under pressure greater than its vapour pressure for the temperature involved is called a _____________ liquid?

   A. Sub-cooled B. Saturated C. Non-solidifiable D. None of these...

7. Which of the following hardness tests does not measure the indentation hardness of metals and alloys ?

   A. Vickers hardness test B. Shore scleroscope test C. Brinell hardness test D. Rockwell hardness test...

8. Which of the following is an example of cathodic protection of metals against corrosion ?

   A. Painted steel B. Galvanised iron C. Case hardened steel D. Lead lined reactor...

9. The temperature at which the magnetic property of iron disappears (i.e., it becomes nonmagnetic) and its electrical conductivity & specific heat also changes, is called the ‘Curie point’, which is ________________ °C ?

   A. 768 B. 908 C. 1400 D. 1539...

10. With increase in temperature, the electrical conductivity of semiconductors_____________________?

    A. Increases B. Decreases C. Remain constant D. Either A. or B. depends on the type of semi-conductor...