A. 1:3
B. 1:4
C. 1:8
D. 1:2

View Answer
B. 1:4


Different ratio of cement is used for mortar for outside plaster is based on following criteria;

Mix Ratio of Mortar General Usage Recommended
1:3  Very rich mortar mix. Not recommended for general usage at sites. Can act as a repair mortar with a waterproofing/bonding agent
1:4 For External Plaster and for ceiling plaster
1:5 Brickwork Mortar and for Internal plaster (If sand is not fine Fineness Modulas > 3)
1:6 For Internal Plaster (if fine sand is available)

We can calculate mix ratio of cement mortar with the help of below YouTube video.

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