engineering recuitment UPPSC AE Mock Test 2024 Construction Materials and Management Miscellaneous Material
Study the following statements and identify the correct combinations of statements.
Statements:
(A): A solution of barium hydroxide Ba(OH)2 when applied on a stone surface acts as a preservative. This is used when the decay of stone is mainly due to calcium sulphate.
(B): The barium sulphate is insoluble and it is least affected by atmospheric agents. Ca(OH)2 absorbs CO2 from the atmosphere and forms CaCO3 which adds to the strength to the stones.
1
Statement A is true but statement B is false
2
Statement A is false but statement B is true
3
Both statements are true.
4
Both statements are false.