Question

The _______________ consists of an equal volume of lime and sand, and these two materials are carefully ground in a mortar mill.

(a) Lime Mortar

(b) Cement Mortar

(c) Water proof mortar

(d) Special mortar

I got this question in an international level competition.

This intriguing question originated from Mortar for Plastering in division Pointing and Plastering of Construction & Building Materials

Answer 1

The correct option is (a) Lime Mortar

For explanation: The fat lime is recommended for plaster work because the fat lime contains 75% of CaOH and it combines with CO2 of atmosphere and gives  CaCO3 quickly. Thus, the lime sets quickly, but it imparts low strength and hence it can be used only for plaster work.