Correct answer
A. Patenting
Explanation
The correct answer is Patenting.
Resistance to heat flow by conduction is proportional to (where, t & ρ are thickness & density of the material respectively and A = area normal to the direction of heat flow.)?
Washing of coal ________?
Coal tar (produced by high temperature carbonisation) is the main source of________?
Pitot tube measures the ________ of a fluid?
The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorific value will be________?
________ polythene is most prone to stress-cracking?