Question

Which of the following statements about a frog is not true?

(a) A frog is used to indicate the trade name of the manufacturer

(b) It is placed on raw bricks during moulding

(c) It is a mark of depth about 10-20 cm

(d) It serves as a key for holding mortar

I had been asked this question in semester exam.

My doubt stems from Bricks in chapter Glass, Lime, Clay Products & Bricks of Construction & Building Materials

Answer 1

Right option is (c) It is a mark of depth about 10-20 cm

To explain: A frog is used to indicate the trade name of the manufacturer. It is a mark of depth about 10-20 mm. It is placed on raw bricks during moulding and serves as a key for holding mortar.