Question

The hydrometer are generally calibrated at ____________

(a) 35°c

(b) 27°c

(c) -35°c

(d) -27°c

I got this question in examination.

The doubt is from Hydrometer Method topic in section Index Properties Determination of Geotechnical Engineering I

Answer 1

The correct answer is (b) 27°c

To elaborate: The hydrometer are generally calibrated at 27°c if the temperature is more than 27°c, temperature correction will be taken negative. If less than 27°c then the temperature correction will be positive.