Question

MM 1.5 means:

(a) Masonry Mortar of cement content 1.5 bags

(b) Mild Mortar of cement content 1.5 bags

(c) Masonry Mortar of compressive strength 1.5N/mm^2.

(d) Mild Mortar of compressive strength 1.5N/mm^2.

I have been asked this question in an international level competition.

Question is from Mortar topic in division Building Construction of Basic Civil Engineering

Answer 1

Correct choice is (c) Masonry Mortar of compressive strength 1.5N/mm^2.

For explanation I would say: MM stands for Masonry Mortar.  The number after that represents the compressive strength of that mortar mix.