Question

To measure the concrete temperature, the stem of the thermometer must be kept by at least ___ inches of concrete.

(a) 1

(b) 2

(c) 3

(d) 4

I got this question in class test.

I'd like to ask this question from Testing of Cement in portion Types of Cement and Testing of Cement of Concrete Technology

Answer 1

Correct answer is (c) 3

Explanation: The stem of the thermometer should be surrounded by at least 3 inches of the concrete for better reading.