1560Chemical EngineeringMedium
Which of the following is an ore of iron?
AHematite
BChalcopyrite
CBauxite
DGalena
Correct answer
A. Hematite
Explanation
The correct answer is Hematite.
Correct answer
A. Hematite
Explanation
The correct answer is Hematite.
In sewage treatment, its sedimentation is speeded up by commonly adding________?
Presence of bacteria in potable (drinking) water causes________?
Which is an example of closed system?
________ is used for determining the tensile strength of steels?
Viscosity index of a lubricating oil________?
The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about ________ cm2/gm?