Heat and Mass Transfer
Thermal conductivity of water in general with rise in temperature

Decreases
May increase or decrease depending on temperature
Increases
Remain constant

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
A steam pipe is to be insulated by two insulating materials put over each other. For best results

Inferior insulation should be put over pipe and better one over it
Whether to put inferior OIL over pipe or the better one would depend on steam temperature
Both may be put in any order
Better insulation should be put over pipe and better one over it

ANSWER DOWNLOAD EXAMIANS APP