2683Chemical EngineeringMedium
Soaps remove dirt by ________?
AIncreasing the surface tension
BNone of these
CSupplying hydrophilic group
DDecreasing wettability
Correct answer
B. None of these
Explanation
The correct answer is None of these.
Correct answer
B. None of these
Explanation
The correct answer is None of these.
Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around ________ cm/hr?
Cold cracking in the heat affected zone of a high strength steel weld can take place because of the________?
A barometer measures the ________ pressure?
The closed loop pole of a stable second order system could be________?
A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun’s equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 × 103 VOM + 10.94 × 106 V2 OM (SI units) If water is to be used as the fluidising medium, the minimum fluidisation velocity, VOM is________?
‘Age hardening’ of duralumin is due to________?