Heat Transfer
With increase in temperature, the thermal conductivity of most liquids

Decreases
Remains same
Increases
First increases upto a certain temperature and then becomes constant

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred

By direct contact of hot flue gas with air
Through a metallic wall
By heating an intermediate material (like chequor bricks) and then heating the air from this hot material
None of these

ANSWER DOWNLOAD EXAMIANS APP