Identify the INCORRECT statement with respect to asbestos material.
1
Non-acid-resistant asbestos is represented by chrysotile asbestos.
2
When asbestos is heated at 550°C, asbestos loses elasticity and strength, becomes brittle and restores its properties on cooling.
3
Asbestos is used to make sheets (A.C. sheets) and boards for roofing.
4
Asbestos molecules are strongly bound together only in one direction, whereas the lateral bond with adjacent molecules is quite weak.