Bissoy.com
Doctors Medicines MCQs Q&A

Thermal conductivity is the maximum for which substance:

Thermal conductivity is the maximum for which substance: Correct Answer Diamond

Concept:

Thermal conductivity: 

  • Thermal conductivity is the property of a particular substance and shows the ease by which the process takes place
  • Higher the thermal conductivity more easily will be the heat conduction through the substance
  • The thermal conductivity of a medium strongly depends on the Atomic arrangement of medium and Operating temperature.
  • It is denoted by K and the SI unit is watt per (meter.kelvin) i.e. (W/m-K).
  • Some values of the thermal conductivity of common materials are.
  1. Diamond -  2200 W/m-K
  2. Silver - 430 W/m-K 
  3. Copper – 385 W/m-K
  4. Aluminium – 209 W/m-K
  5. Brass – 109 W/m-K
  6. Ice - 202 W/m-K
  7. Air – 0.0238 W/m-K

Related Questions

Consider the following statements about thermal conductivity: 1) Thermal conductivity decreases with increasing molecular weight 2) Thermal conductivity of non-metallic liquids generally decreases with increasing temperature 3) Thermal conductivity of gases and liquids is generally smaller than that of solids Which of the above statements are correct?
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?
Thermal diffusivity of a substance is given by (where h = Thermal diffusivity, ρ = Density of substance, S = Specific heat, and k = Thermal conductivity)
Thermal diffusivity of a substance is given by (where h = Thermal diffusivity, $$\rho $$ = Density of substance, S = Specific heat and k = Thermal conductivity)
A cylinder of radius r and made of material of thermal conductivity k 1 is surrounded by a cylindrical shell of inner radius r and outer radius 2r. This outer shell is made of a material of thermal conductivity k 2. Net conductivity would be
Which of the following is the correct definition of mole? (A) It is equal to the gram atomic mass of the substance (B) It contains 6.022 × 1020 atoms of the given substance (C) It is equal to the gram molecular weight of the substance (D) It contains 6.022 × 1023 molecules of the given substance
Which of the following statement is correct? Statement 1: The addition of hydrogen to a substance and the removal of the oxygen from a substance is called oxidation. Statement 2: The addition of oxygen in a substance and the removal of  Hydrogen from a substance is called reduction.  
Which of the following represents the properties of carbon nanotubes? 1. High electrical conductivity 2. Very high tensile strength 3. High thermal conductivity 4. Low thermal expansion coefficient Select the correct answer using the code given below
Which is true regarding lumped system analysis? (i) Conductive resistance = 0 (ii) Convective resistance = 0 (iii) Thermal conductivity = 0 (iv) Thermal conductivity = infinity Identify the correct statements
For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally