Which of the following is the correct relation between thermal transmittance and thermal time constant?

Which of the following qualities is not possessed by the filters in the air conditioning system?

Which type of stone finish is represented in the figure below?

According to the Indian Standards, it is recommended that thermal damping of a wall should not be less than ___

The toughness of stone is said to be high if the value of the toughness index exceeds ______

Which of the following is the lowest part of the blast furnace?

Which of the following is the red oxide of iron?

The manganese content in cast iron should be kept below ______