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
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 has the highest value of thermal conductivity?
A Water
B Steam
C Solid ice
D Melting ice
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
________ has the highest value of thermal conductivity.
A Copper
B Aluminium
C Brass
D Steel
An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture?
A Cork
B Saw dust
C Sand
D Chemically prepared foam
Refractories used in/for __________ should have low thermal conductivity.
A Coke ovens
B Insulation
C Regenerators
D Muffle furnaces
Which of the following has maximum value of thermal conductivity?
A Aluminium
B Steel
C Brass
D Copper

Next steps