Bissoy.com
Doctors Medicines MCQs Q&A

Are these statements about the thermal conductivity true? Statement 1: Thermal conductivity is an extrinsic property. Statement 2: It involves in the bulk motion of the molecules during heat transfer.

Are these statements about the thermal conductivity true? Statement 1: Thermal conductivity is an extrinsic property. Statement 2: It involves in the bulk motion of the molecules during heat transfer. Correct Answer False, False

Thermal conductivity is the intrinsic property of the material. It refers to its ability to conduct heat. Heat transfer by conduction involves transfer of energy within a material without any motion of the molecules during heat transfer.

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?
Consider the following types of motion.  A. Periodic Motion B. Straight Line Motion C. Rotational Motion D. Circular Motion The motion of a pendulum can be categorised in which of the following types of motion?
What is correct about the dismissal of Vice President of Municipal Council ? a. He may be dismissed by No confidence motion. b. Signature of 1/6 members of council is essential in the resolution to introduce the No confidence motion. c. Signature of 1/10 members of council is essential in the resolution to introduce the No confidence motion. d. No confidence motion should be accepted by the Council by 2/3 majority. e. No confidence motion should be accepted by the Council by 3/4 majority. f. No confidence motion should be Passed by more than half of the total elected members and 2/3 majority of the members present and voting.
Below a question is given with two statements (I) and (II). These statements may be either independent causes or may be effects of independent causes or a common cause. One of these statements may be the effect of the other statement. Read both the statements and decide which of the following answer choice correctly depicts the relationship between these two statements. Statements: I. The prices of vegetables have been increased considerably during these winters. II. There is a tremendous decrease in the temperature during these winters thereby damaging crops greatly.
Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow, and k = Thermal conductivity of the body)
Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow and k = Thermal conductivity of the body)
Heat is being transferred by convection from water at 48 degree Celsius to glass plate whose surface is exposed to water at 40 degree Celsius. The thermal conductivity of water is 0.6 W/m K and the thermal conductivity of glass is 1.2 W/m K. The spectral gradient of temperature in the water at the water glass interface is 10 -4 K/m. The heat transfer coefficient in W/m2 K is
Which of the following statements about two-phase heat exchangers are correct? Statement 1: Two-phase heat exchangers undergo phase change during the heat transfer process. Statement 2: It is used mainly in water-to-water heat transfer applications.
A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as
A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as