A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m2.°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be________?

Number of degrees of freedom for a three phase system in equilibrium comprising of three non-reacting chemical species is________?

Which of the following is a controlling factor in very fast heterogeneous reaction?

What is the range of tempering temperature (°C) for most of the materials?

Wavelength corresponding to the maximum energy is inversely proportional to the absolute temperature. This is ________ law?

Commercial production of Vanaspati is done by ________ of edible vegetable oils?