railway RRB JE (CBT I + CBT II) Mock Test 2024 Construction Materials and Management Miscellaneous Material
Choose a suitable option.
Rubber bitumen mastic is used for which of the following purpose(s)?
1. Waterproofing
2. Repairing
3. Adhesion
1
Only 1
2
Only 2
3
Both 1 and 2
4
All 1, 2 and 3