100 Best Building Materials- Mortar MCQs
Top 100 Building Material- Mortar MCQ
Q1). Building mortars are classified into how many grades based on compressive strength
a).4 grades
b).6 grades
c).7 grades
d).9 grades
Correct Answer:
9 grades
Explanation:
Q2). Lime mortars are the mixture of
a).Lime, cement, and water.
b).Cement, sand and water.
c).Hydraulic lime, sand, water.
d).Air hardening lime, sand and tarpin.
Correct Answer:
Hydraulic lime, sand, water.
Explanation:
Q3). Gauged mortar are the mixture of
a).stone dust, sand, lime.
b).Lime, cement, sand.
c).Surkhi, lime, cement.
d).Sand, fly ash, cement.
Correct Answer:
Lime, cement, sand.
Explanation:
Q4). After adding cement, the gauged mortar should be used within
a).15 minutes.
b).30 to 60 minutes.
c).1 to 2 hours.
d).3 to 6 hours.
Correct Answer:
1 to 2 hours.
Explanation:
Q5). Usually, lime mortar is made with
a).Pure lime.
b).Air hardening lime.
c).Hydraulic lime.
d).both b and c
Correct Answer:
both b and c
Explanation:
Q6). The principal demerit in using lime mortar is that it
a).Sets slowly.
b).Swells.
c).is uneconomical.
d).is not sound.
Correct Answer:
Sets slowly.
Explanation:
Q7). Lime is added to cement mortar because of
a).To increase the setting time.
b).To increase the workability.
c).To make it economical.
d).All of these.
Correct Answer:
To increase the workability.
Explanation:
Q8). In case of making dam-proofing mortars, which of the following type of cement are used
a).Ordinary Portland cement.
b).Rapid hardening cement.
c).Sulphate resisting Portland cement.
d).Low heat cement.
Correct Answer:
Sulphate resisting Portland cement.
Explanation: