Related Questions

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?
A CO2
B N2
C O2
D CO
For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally
A Decreases
B Increases
C Remains unchanged
D Increases exponentially
________ has the highest value of thermal conductivity.
A Copper
B Aluminium
C Brass
D Steel
Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)
A $$\frac{1}{{\text{k}}}$$
B k
C k2
D $$\frac{1}{{{{\text{k}}^2}}}$$
Which of the following liquid metals has the highest thermal conductivity?
A Molten sodium
B Molten lead
C Mercury
D Molten potassium
Which of the following has the highest thermal conductivity?
A Brick
B Air
C Water
D Silver
Which of the following is expected to have highest thermal conductivity?
A Steam
B Solid ice
C Melting ice
D Water
Which of the following has maximum value of thermal conductivity?
A Aluminium
B Steel
C Brass
D Copper
Among liquids, water has a comparatively high value of thermal conductivity, due to its
A Low density
B High viscosity
C Partial ionisation
D Dense structure
Which of the following has maximum thermal conductivity at the same temperature?
A Steel
B Petrol
C Air
D All of the above

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