Question

______ method is specially suited to a circumstance where water content is to be quickly determined for the purpose of proper field control.

(a) Oven drying

(b) Sand bath

(c) Alcohol

(d) Calcium carbide

I have been asked this question by my school teacher while I was bunking the class.

I'd like to ask this question from Water Content topic in chapter Index Properties Determination of Geotechnical Engineering I

Answer 1

The correct answer is (d) Calcium carbide

The best explanation: Calcium carbide method is very quick as the result can be obtained in 5 – 10 minutes. The field kit contains the moisture tester, a small single – pan weighing balance, a bottle containing   calcium carbide and a brush.