Correct answer
A. < 7
Explanation
The correct answer is < 7.
Between 230 and 370°C, blue brittleness is caused in mild steel because of the________?
Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about ________ °C?
Pick out the wrong unit conversion of thermal conductivity?
The effectiveness factor for large value of Thiele modulus [L√(K/D1)] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2/second)?
During washing of filter at the end of constant pressure filtration, the rate of washing equals the rate of filtration________?
A ________ surface has the maximum thermal emissivity out of the following?