railway RRB JE (CBT I + CBT II) Mock Test 2024 Construction Materials and Management Bricks and Mortar
Disintegration of brick masonry walls primarily due to
1. Efflorescence
2. Magnesium sulphate in bricks
3. Calcined clay admixtures
4. Kankar nodules
Which of the above statements are correct?1
1, 2 and 3 only
2
1, 2 and 4 only
3
2 and 4 only
4
1, 2, 3 and 4